scholarly journals Magnumosides B3, B4 and C3, Mono- and Disulfated Triterpene Tetraosides from the Vietnamese Sea Cucumber Neothyonidium (= Massinium) magnum

2017 ◽  
Vol 12 (10) ◽  
pp. 1934578X1701201 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Vladimir I Kalinin ◽  
Pelageya V. Andrijaschenko ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
2D Nmr ◽  
Carcinoma Cells ◽  
Ehrlich Carcinoma ◽  
Shallow Waters ◽  
2D Nmr Spectroscopy ◽  
Human Colorectal Carcinoma ◽  
Spleen Lymphocytes ◽  
Effects Of Radiation ◽  
Carbohydrate Chains

Two new monosulfated triterpene glycosides, magnumosides B3 (1) and B4 (2) and one new disulfated triterpene glycoside, magnumoside C3 (3) have been isolated from the tropical Indo-West Pacific sea cucumber Neothynidium (=Massinium) magnum (Phyllophoridae, Dendrochirotida) collected in the Vietnamese shallow waters. The structures of the glycosides were elucidated by 2D NMR spectroscopy and mass-spectrometry. All the isolated glycosides are characterized by the non-holostane type aglycones having 18(16)-lactone and 7(8)-double bond and differing from each other by the side chains structures and the quantity of sulfate groups in the carbohydrate chains. The cytotoxic activity of the compounds 1–3 against mouse spleen lymphocytes and ascite form of mouse Ehrlich carcinoma cells, human colorectal carcinoma DLD-1 as well as their hemolytic effects have been studied. Magnumoside B4 (2) greatly suppressed the colony formation and decreased the size of colonies of DLD-1 cancer cells at non-cytotoxic concentrations. The study on synergism of effects of radiation and compounds 1–3 on proliferation of DLD-1 cells showed that the tested compounds almost equally enhanced antiproliferative effect of radioactive irradiation.

scholarly journals Fallaxosides C1, C2, D1 and D2, Unusual Oligosulfated Triterpene Glycosides from the Sea Cucumber Cucumaria fallax (Cucumariidae, Dendrochirotida, Holothurioidea) and Taxonomic Status of this Animal

2016 ◽  
Vol 11 (7) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Hemolytic Activity ◽  
Sea Cucumber ◽  
Taxonomic Status ◽  
2D Nmr ◽  
Carcinoma Cells ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
2D Nmr Spectroscopy ◽  
Spleen Lymphocytes

Four new triterpene glycosides, fallaxosides C1 (1), C2 (2), D1 (3) and D2 (4) along with the known cucumarioside A3-2 (5) and koreoside A (6) have been isolated from the sea cucumber Cucumaria fallax (Cucumariidae, Dendrochirotida). Structures of the glycosides have been elucidated by 2D NMR spectroscopy and mass spectrometry. All of the glycosides are rare non-holostane derivatives having shortened side chains and contain pentasaccharide carbohydrate moieties with two or three sulfate groups. Structures of these triterpene glycosides and their comparison with those earlier isolated from Cucumaria spp. and Pseudocnus dubiosus leoninus allow us to suggest that the present assignment of C. fallax to the genus Pseudocnus is not correct, and this species should be assigned to the genus Cucumaria. Cytotoxic activity of glycosides 1–5 against the ascite form of mouse Ehrlich carcinoma cells and mouse spleen lymphocytes and hemolytic activity against mouse erythrocytes have been studied. The glycosides were expectedly not active in all the tests due to the absence of an 18(20)-lactone in their aglycones and the presence of several sulfate groups. There was one exception, cucumarioside A3-2 (5), which demonstrated a weak cytotoxicity against lymphocytes and moderate hemolytic activity.

scholarly journals Colochirosides B1, B2, B3 and C, Novel Sulfated Triterpene Glycosides from the Sea Cucumber Colochirus robustus (Cucumariidae, Dendrochirotida)

2015 ◽  
Vol 10 (10) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Hemolytic Activity ◽  
Sea Cucumber ◽  
2D Nmr ◽  
Carcinoma Cells ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
2D Nmr Spectroscopy ◽  
Carbohydrate Chains

Four new triterpene glycosides, colochirosides B1 (1), B2 (2), B3 (3) and C (4) have been isolated from the sea cucumber Colochirus robustus (Cucumariidae, Dendrochirotida). Six known earlier glycosides from representatives of two families of the order Dendrochirotida have also been found in C. robustus. Structures of the glycosides have been elucidated by 2D NMR spectroscopy and mass spectrometry. All the glycosides belong to the holostane series and contain tetrasaccharide linear carbohydrate chains with one or two sulfate groups. Cytotoxic activities of glycosides 1-4 against the ascite form of mouse Ehrlich carcinoma cells and hemolytic activities against mouse erythrocytes have been studied. Hemolytic activity of the glycosides was higher than cytotoxic. Glycosides 3 and 4 demonstrated strong effects, whereas compounds 1 and 2 containing the hydroxy-group in the side chains showed moderate hemolytic activity and were not cytotoxic.

scholarly journals Triterpene Glycosides from the Sea Cucumber Eupentacta fraudatrix. Structure and Biological Activity of Cucumariosides B1 and B2, Two New Minor Non-Sulfated Unprecedented Triosides

2012 ◽  
Vol 7 (9) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Hemolytic Activity ◽  
Sea Cucumber ◽  
2D Nmr ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
Cytotoxic Action ◽  
2D Nmr Spectroscopy ◽  
Spleen Lymphocytes ◽  
Eupentacta Fraudatrix

Two new minor triterpene glycosides, cucumariosides B1 (1) and B2 (2) have been isolated from the Far Eastern sea cucumber Eupentacta fraudatrix. Structures of the glycosides were elucidated by 2D NMR spectroscopy and MS. Glycosides 1 and 2 belong to the cucumariosides B group and have unprecedented trisaccharide carbohydrate moieties without sulfate groups. Glycosides 1 and 2 differ from each other in side chain structures in the aglycone moieties. These minor substances are probably intermediate metabolites in the biosynthesis of triterpene pentaosides. Cytotoxic activities of glycosides 1 and 2 against mouse spleen lymphocytes and the cells of the ascite form of mouse Ehrlich carcinoma were studied, along with hemolytic activity against mouse erythrocytes and antifungal activity. Cucumarioside B1 (1) was not active in any of the tests, while cucumarioside B2 (2) demonstrated moderate hemolytic activity and low cytotoxic action against Ehrlich carcinoma cells.

Structures of Violaceusosides C, D, E and G, Sulfated Triterpene Glycosides from the Sea Cucumber Pseudocolochirus violaceus (Cucumariidae, Dendrochirotida)

2014 ◽  
Vol 9 (3) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
2D Nmr ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
Sugar Composition ◽  
2D Nmr Spectroscopy ◽  
Chemical Structures ◽  
The Family ◽  
Carbohydrate Chains

Four new triterpene glycosides, violaceusosides C (1), D (2), E (3) and G (4) have been isolated from the sea cucumber Pseudocolochirus violaceus (Cucumariidae, Dendrochirotida). Eight known glycosides, DS-holothurin A and holothurinoside A, isolated earlier from Holothuria forskalii (order Aspidochirotida); and violaceuside A, lefevreoside C, philinopside E, intercedenside B, violaceuside II and liovilloside A isolated earlier from representatives of the family Cucumariidae, order Dendrochirotida have also been found in P. violaceus. The chemical structures of the glycosides were elucidated by 2D NMR spectroscopy and mass spectrometry. Violaceusosides C (1), D (2), E (3) and G (4) have holostane-type aglycones and tetrasaccharide linear carbohydrate chains differing in the sugar composition and the number and position of sulfate groups. Violaceusosides E (3) and G (4) are characterized by the presence of a sulfate group at C-3 of the quinovose residue that is very rare among sea cucumber glycosides. Cytotoxic activities of the glycosides 1–4 against cells of the ascite form of mouse Ehrlich carcinoma and hemolytic activities against mouse erythrocytes have been studied. Violaceusosides C (1) and D (2) demonstrated moderate cytotoxic and hemolytic effects, while violaceusosides E (3) and G (4) have more powerful activities.

scholarly journals Triterpene Glycosides from the Sea Cucumber Eupentacta fraudatrix. Structure and Biological Action of Cucumariosides A1, A3, A4, A5, A6, A12 and A15, Seven New Minor Non-sulfated Tetraosides and Unprecedented 25-Keto, 27-Norholostane Aglycone

2012 ◽  
Vol 7 (4) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
2D Nmr ◽  
Structural Features ◽  
Biological Action ◽  
Triterpene Glycosides ◽  
Side Chain ◽  
Ehrlich Carcinoma ◽  
2D Nmr Spectroscopy ◽  
Spleen Lymphocytes ◽  
Eupentacta Fraudatrix

Seven new minor triterpene glycosides, cucumariosides A1 (1), A3 (2), A4 (3), A5 (4), A6 (5), A12 (6) and A15 (7) have been isolated from the Far Eastern sea cucumber Eupentacta fraudatrix. Structures of the glycosides were elucidated by 2D NMR spectroscopy and MS. Glycosides 1–7 belong to the group of cucumariosides A, having linear tetrasaccharide carbohydrate moieties without any sulfate group and possessing 3- O-methyl-D-xylose as a terminal monosaccharide unit. The latter peculiarity is rare in sea cucumber glycosides, but typical for the glycosides from E. fraudatrix. Glycosides 1–7 differ from each other by side chain structures in the aglycone moieties; three of them have unique structural features. The first is the presence of a 25-butoxy-group in the side chain of cucumarioside A3 (2), the second is a 23 E,25-diene system in cucumarioside A6 (5) and the third is a 25-keto-27-nor-holostane aglycone in cucumarioside A12 (6); these were never previously found in sea cucumber glycosides. Cytotoxic activity of glycosides 1–7 against mouse spleen lymphocytes and the cells of the ascite form of mouse Ehrlich carcinoma, along with hemolytic activity against mouse erythrocytes and antifungal activity were studied. Glycosides 1 and 5 were the most active in all the tests.

scholarly journals Triterpene Glycosides from the Sea Cucumber Eupentacta fraudatrix. Structure and Cytotoxic Action of Cucumariosides A2, A7, A9, A10, A11, A13 and A14, Seven New Minor Non-Sulfated Tetraosides and an Aglycone with an Uncommon 18-Hydroxy Group

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Hydroxy Group ◽  
Sea Cucumber ◽  
2D Nmr ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
Cytotoxic Action ◽  
2D Nmr Spectroscopy ◽  
Spleen Lymphocytes ◽  
Eupentacta Fraudatrix

Seven new minor triterpene glycosides, cucumariosides A2 (1), A7 (2), A9 (3), A10 (4), A11 (5), A13 (6) and A14 (7) have been isolated from the Far Eastern sea cucumber Eupentacta fraudatrix. Structures of the glycosides were elucidated by 2D NMR spectroscopy and MS. Glycosides 1–7 belong to the group of cucumariosides A, having linear tetrasaccharide carbohydrate moieties without any sulfate group and possessing 3- O-methyl-D-xylose as a terminal monosaccharide unit. Glycosides 1, 2, 5-7 differ from each other in side chain structures in aglycone moieties, while cucumarioside A10 (4) has a 23,24,25,26,27-pentanorlanostane aglycone with 18(16)-lactone. Cucumarioside A9 (3), having an uncommon 18-hydroxy group, is the second representative of the unique metabolically active glycosides that are regarded as intermediates of glycoside biosynthesis in sea cucumbers. Cytotoxic activities of glycosides 1–7 and cucumarioside A8 (8) against mouse spleen lymphocytes and the cells of the ascite form of mouse Ehrlich carcinoma, along with hemolytic activity against mouse erythrocytes and antifungal activity were studied. Cucumariosides A2 (1), A8 (8) and A13 (6) demonstrated high hemolytic activities. Glycosides 1, 4 and 6 showed moderate cytotoxic activity. Only cucumarioside A8 (8), having an 18-oxymethylene group and a 24(25)-double bond, was very active in all the tests.

scholarly journals Psolusosides C1, C2, and D1, Novel Triterpene Hexaosides from the Sea CucumberPsolus fabricii (Psolidae, Dendrochirotida)

2018 ◽  
Vol 13 (12) ◽  
pp. 1934578X1801301 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Sergey A. Avilov ◽  
Anatoly I. Kalinovsky ◽  
Vladimir I. Kalinin ◽  
Pelageya V. Andrijaschenko ◽  
...  
Keyword(s):  
Sea Of Okhotsk ◽  
Sea Cucumber ◽  
Apostichopus Japonicus ◽  
2D Nmr ◽  
Shallow Waters ◽  
Monosaccharide Residue ◽  
2D Nmr Spectroscopy ◽  
The Third ◽  
Kurile Islands ◽  
Carbohydrate Chains

Three new triterpene glycosides, psolusosides C1 (1), C2 (2) and D1 (3) have been isolated from the sea cucumber Psolus fabricii collected in the Sea of Okhotsk in the shallow waters of Onekotan Island (Kurile Islands). Five known glycosides: cladolosides B, M1, P2, isolated earlier from the sea cucumbers of genus Cladolabes and holotoxin A1 with 27- nor-25-oxo-holotoxin A1, isolated earlier from Apostichopus japonicus have also been found. The glycoside structures were elucidated by 2D NMR spectroscopy and HR mass-spectrometry. Compounds 1–3 possess hexasaccharide carbohydrate chains, identical for 1 and 2 and different in the third monosaccharide residue for 3. All the glycosides comprise holostane type aglycones with a 9(11)-double bond and a 16-keto-group and differ from each other in the side chains structures.

scholarly journals Structures and Biological Activities of Typicosides A1, A2, B1, C1 and C2, Triterpene Glycosides from the Sea Cucumber Actinocucumis typica

2013 ◽  
Vol 8 (3) ◽  
pp. 1934578X1300800
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
Biological Activities ◽  
Monosaccharide Composition ◽  
Triterpene Glycosides ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
Monosaccharide Residue ◽  
2D Nmr Spectroscopy ◽  
The Third ◽  
Carbohydrate Chains

Five new minor triterpene glycosides, typicosides A1 (1), A2 (2), B1 (3), C1 (4) and C2 (5), along with two known glycosides, intercedenside A and holothurin B3, have been isolated from the sea cucumber Actinocucumis typica. Structures of the glycosides were elucidated by 2D NMR spectroscopy and MS. Glycosides 1–5 are linear mono- and disulfated tetraosides differing from each other in both aglycone structures and monosaccharide composition of the carbohydrate chains. Typicosides A1 (1) and A2 (2) have identical monosulfated carbohydrate moieties with a xylose residue as the third monosaccharide unit and differ from each other in aglycon structures. Typicoside B1 (3) has glucose as the third monosaccharide residue. Typicosides C1 (4) and C2 (5) contain the same disulfated carbohydrate chains and differ from each other in structures of aglycone side chains. Antifungal activity of glycosides 1–5 against three species of fungi along with cytotoxic activity against mouse spleen lymphocytes and mouse Ehrlich carcinoma cells (ascite form), as well as hemolytic activities against mouse erythrocytes have been studied. All new glycosides, except for typicoside C1 (4), containing a hydroxy-group in the aglycone side chain, demonstrate rather strong hemolytic and cytotoxic activities.

scholarly journals Triterpene Glycosides from the Sea Cucumber Eupentacta Fraudatrix. Structure and Biological Action of Cucumariosides I1, I3, I4, Three New Minor Disulfated Pentaosides

2013 ◽  
Vol 8 (8) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andryjaschenko ◽  
Pavel S. Dmitrenok ◽  
...  
Keyword(s):  
Double Bond ◽  
Sea Cucumber ◽  
2D Nmr ◽  
Triterpene Glycosides ◽  
Side Chain ◽  
Ehrlich Carcinoma ◽  
Cytotoxic Activities ◽  
Moderate Activity ◽  
2D Nmr Spectroscopy ◽  
Eupentacta Fraudatrix

Three new minor triterpene glycosides, cucumariosides I1 (1), I3 (2) and I4 (3) have been isolated from the Far Eastern sea cucumber Eupentacta fraudatrix. Structures of the glycosides were elucidated by 2D NMR spectroscopy and MS. Glycosides 1–3 belong to the group of cucumariosides I, having branched pentasaccharide carbohydrate moieties with two sulfate groups and possessing 3- O-methyl-D-xylose as a terminal monosaccharide unit that is a characteristic feature of all the glycosides isolated from E. fraudatrix. Glycosides 1 and 2 differ from each other by the side chain structures in the holostane aglycone moieties, while cucumarioside I4 (3) has a 23,24,25,26,27-pentanorlanostane aglycone with an 18(16)-lactone. Cytotoxic activities of glycosides 1–3 against mouse spleen lymphocytes and ascite form of mouse Ehrlich carcinoma cells, along with hemolytic activity against mouse erythrocytes and antifungal activity were studied. Glycoside 1, having an aglycone side chain with a 24(25)-double bond, possesses moderate activity in all the tests, while glycoside 2, having 23(24)-double bond and 25-hydroxy group in the side chain, and glycoside 3 with an aglycone with an 18(16)-lactone and shortened side chain have either low activity or are non-active.

scholarly journals Triterpene Glycosides from the Far Eastern Sea Cucumber Thyonidium (=Duasmodactyla) kurilensis (Levin): The Structures, Cytotoxicities, and Biogenesis of Kurilosides A3, D1, G, H, I, I1, J, K, and K1

Marine Drugs ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 187
Author(s):  
Alexandra S. Silchenko ◽  
Anatoly I. Kalinovsky ◽  
Sergey A. Avilov ◽  
Pelageya V. Andrijaschenko ◽  
Roman S. Popov ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
2D Nmr ◽  
Structural Features ◽  
Cytotoxic Activities ◽  
Hydroxyl Groups ◽  
2D Nmr Spectroscopy ◽  
Esi Mass Spectrometry ◽  
Branched Chain ◽  
Far Eastern ◽  
Carbohydrate Chains

Nine new mono-, di-, and trisulfated triterpene penta- and hexaosides, kurilosides A3 (1), D1 (2), G (3), H (4), I (5), I1 (6), J (7), K (8), and K1 (9) and two desulfated derivatives, DS-kuriloside L (10), having a trisaccharide branched chain, and DS-kuriloside M (11), having hexa-nor-lanostane aglycone with a 7(8)-double bond, have been isolated from the Far-Eastern deep-water sea cucumber Thyonidium (=Duasmodactyla) kurilensis (Levin) and their structures were elucidated based on 2D NMR spectroscopy and HR-ESI mass-spectrometry. Five earlier unknown carbohydrate chains and two aglycones (having a 16β,(20S)-dihydroxy-fragment and a 16β-acetoxy,(20S)-hydroxy fragment) were found in these glycosides. All the glycosides 1–9 have a sulfate group at C-6 Glc, attached to C-4 Xyl1, while the positions of the other sulfate groups vary in different groups of kurilosides. The analysis of the structural features of the aglycones and the carbohydrate chains of all the glycosides of T. kurilensis showed their biogenetic relationships. Cytotoxic activities of the compounds 1–9 against mouse neuroblastoma Neuro 2a, normal epithelial JB-6 cells, and erythrocytes were studied. The highest cytotoxicity in the series was demonstrated by trisulfated hexaoside kuriloside H (4), having acetoxy-groups at C(16) and C(20), the latter one obviously compensated the absence of a side chain, essential for the membranolytic action of the glycosides. Kuriloside I1 (6), differing from 4 in the lacking of a terminal glucose residue in the bottom semi-chain, was slightly less active. The compounds 1–3, 5, and 8 did not demonstrate cytotoxic activity due to the presence of hydroxyl groups in their aglycones.

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