Chemical constituents of two Ecuadorian medicinal plants, Tagetes terniflora Kunth and Croton rivinifolius Kunth

2021 ◽  
Author(s):  
Alírica I Suárez ◽  
Vladimir Morocho ◽  
Vladimir Luna ◽  
Katty Castillo ◽  
Chabaco Armijos
Keyword(s):  
Medicinal Plants ◽  
Spectroscopic Analysis ◽  
Chemical Constituents ◽  
Two Dimensional ◽  
Phytochemical Study ◽  
Isolation And Characterization ◽  
Organic Extracts ◽  
Medicinal Properties ◽  
Nmr Methods

Phytochemical study of two medicinal plants from Ecuador, Tagetes terniflora Kunth, and Croton rivinifolius Kunth, led to the isolation and characterization of the major constituents present in the organic extracts obtained from these plants: 5-(4-acetoxy-1-butynil)-2,2’-bi-thiophene (1), 5-methyl-2,2’:5’,2”- terthiophene (2), patuletin (3) from Tagetes terniflora, and isocorydine (4), sweroside (5), tiliroside (6) from Croton rivinifolius. The structures of these compounds were established by spectroscopic analysis including two-dimensional NMR methods, MS, and comparison with published spectral data. They are recognized as secondary metabolites that represent the chemotaxonomy of Tagetes and Croton genera and could be responsible for the recognized medicinal properties attributed to these species. This paper deals with the first report that shows the presence of these compounds in these plants.

scholarly journals Chemical constituents of leaves Dialium cochinchinense Pierre

2021 ◽  
Vol 4 (3) ◽  
pp. 1131-1136
Author(s):  
Vu Thi Huyen ◽  
Doan Thi Thuy Ai ◽  
Nguyen Thi Hien
Keyword(s):  
Secondary Metabolites ◽  
Nmr Spectra ◽  
Spectroscopic Analysis ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Antimicrobial Activities ◽  
Tropical Regions ◽  
First Report ◽  
Isolation And Characterization

The genus Dialium belongs to the Caesalpinioideae family, consisting of approximately 30 species distributed in the tropical regions. Secondary metabolites from the  Dialium genus have been reported to exhibit various biological activities including antioxidant, cytotoxicity and antimicrobial activities. This work describes the isolation and characterization of five compounds from the leaves of Dialium cochinchinense Pierre. Their structures were established by spectroscopic analysis, including MS and NMR spectra. Accordingly, the isolated compounds were identified to be lupeone (1), b-sitostenone (2), β-sitosterol (3), daucosterol (4), and dihydrokaempferide (5). To the best of our knowledge, this is the first report of the isolation of compounds 1 and 5 from the genus Dialium.

scholarly journals 4-Hydroxy-trans-cinnamate Derivatives and Triterpene from Barleria cristata

2014 ◽  
Vol 12 (2) ◽  
pp. 143-145 ◽  
Author(s):  
Nipa Chowdhury ◽  
Abdullah Al Hasan ◽  
Fakir Shahidullah Tareq ◽  
Monira Ahsan ◽  
ATM Zafrul Azam
Keyword(s):  
Medicinal Plant ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Spectroscopic Methods ◽  
Isolation And Characterization ◽  
Phytochemical Investigation ◽  
Organic Extracts ◽  
Whole Plants ◽  
Important Medicinal Plant

Barleria cristata is an important medicinal plant of Bangladesh. Many compounds of diverse biological activities were isolated from different Barleria species, including irridoids, flavonoids and phenylethanoid derivatives in addition to other groups of chemical constituents. This paper presents the chemical investigation of the whole plants of B.cristata. Classic phytochemical investigation of organic extracts of the whole plants of B. cristata together with spectroscopic methods led to the isolation and characterization of 4-hydroxy-trans-cinnamate derivatives (1-3) and a triterpene, namely oleanolic acid (4). Dhaka Univ. J. Pharm. Sci. 12(2): 143-145, 2013 (December) DOI: http://dx.doi.org/10.3329/dujps.v12i2.17623

A review on phyto-pharmacology of Oxalis corniculata

2021 ◽  
Vol 24 ◽  
Author(s):  
Iqra Sarfraz ◽  
Azhar Rasul ◽  
Ghulam Hussain ◽  
Muhammad Ajmal Shah ◽  
Bushra Nageen ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Current Effort ◽  
Isolation And Characterization ◽  
Anti Cancer ◽  
Anti Oxidant ◽  
Anti Fungal ◽  
Warm Temperate

: Oxalis corniculata (Oxalidaceae) is a small decumbent and delicate appearing medicinal herb flourishing in warm temperate and tropical domains such as Pakistan and India. Main bioactive chemical constituents of Oxalis plant include several alkaloids, flavonoids, terpenoids, cardiac glycosides, saponins, phlobatannins along with steroids. Due to its polyphenolic, glycosides and flavonoid profile, it is proved to be protective in numerous ailments and exhibit various biological activities such as anti-fungal, anti-cancer, anti-oxidant, anti-bacterial, anti-diabetic, and cardioprotective. Moreover, bioactive phytochemicals from this plant possess significant wound healing potential. Our current effort intends to emphasize on the immense significance of this plant species, which have not been the subject matter of clinical trials and effective pharmacological studies, even though its favored usage has been stated. This review proposes that Oxalis corniculata possess potential for the cure of various diseases, however, further researches on isolation and characterization of bioactive compounds along with pre-clinical trials are compulsory to figure out its pharmacological applications.

scholarly journals The Physicochemical analysis and Phytochemical screening of some medicinal plants of Letang Municipality of Morang district, Nepal

BIBECHANA ◽  
2020 ◽  
Vol 17 ◽  
pp. 67-74
Author(s):  
Narendra Kumar Chaudhary ◽  
Rijan Ojha ◽  
Tilak Prasad Gautam
Keyword(s):  
Medicinal Plants ◽  
Chemical Constituents ◽  
Powdered Material ◽  
Physicochemical Analysis ◽  
New Drugs ◽  
Phytochemical Analysis ◽  
Plumbago Zeylanica ◽  
The People ◽  
Active Chemical ◽  
Medicinal Properties

Ethnobotany gives the basic idea about the medicinal properties of plants. Identification of active compounds of the medicinal plants and their standardization is essential for the production of new drugs. In the present work, different parts of the five medicinal plants (Curcuma caesia, Costus speciosus, Drymaria cordata, Leea macrophylla, Plumbago zeylanica) were washed, air dried and crushed. Three different extracts of each powdered material were prepared and standard phytochemical analysis procedure was followed for the analysis of physicochemical properties of plants and the identification of active chemical constituents. Among 5 plants, the highest moisture content (14.83%) was found in Plumbago zeylanica, higher total ash (9.22%) and acid insoluble ash (4.43%) were observed in Cucurma caesia. Phytochemical analysis revealed the presence of 12 varieties of bioactive chemicals in the 5 different plants. The plants of the area have great diversity of phytochemicals of numerous medicinal properties. In conclusions, these five important medicinal plants could be useful for the people of the locality to cure several diseases as well as to generate the source of income. BIBECHANA 17 (2020) 67-74

Nine- and Eight-Vertex Polyhedral Dicarbaborane Chemistry: New arachno and hypho Dicarbaboranes from arachno-4,5-C2B7H13: Isolation and Characterization of the [arachno-4,5-C2B7H12]- and [hypho-7,8-C2B6H13]- Anions, and of the Neutral Ligand Derivatives exo-6-(MeNC)-arachno-4,5-C2B7H11 and exo-5-L-hypho-4,9-C2B7H13 (L = NMe3 and NEt3)

1994 ◽  
Vol 59 (7) ◽  
pp. 1584-1595 ◽  
Author(s):  
Tomáš Jelínek ◽  
Josef Holub ◽  
Bohumil Štíbr ◽  
Xavier L. R. Fontaine ◽  
John D. Kennedy
Keyword(s):  
Nmr Spectroscopy ◽  
Selective Removal ◽  
High Yield ◽  
Two Dimensional ◽  
Neutral Ligand ◽  
Tertiary Amines ◽  
Proton Sponge ◽  
H Nmr ◽  
Isolation And Characterization

Deprotonation of neutral arachno-4,5-C2B7H13 (1) either with 1, 8-(NMe2)2C10H6 (proton sponge, PS) or with a mixture of aqueous K2CO3 and [NMe4]Cl leads to the isolation in high yield of the [arachno-4,5-C2B7H12]- anion (2). Isostructural with this anion is the ligand derivative exo-6-(MeNC)-arachno-4,5-C2B7H11 (3), which is prepared in 20% yield from the reaction between arachno-4,5-C2B7H13 and MeNC in dichloromethane. Under comparable conditions compound 1 with tertiary amines gives the first representatives of the nine-vertex hypho family of dicarbaboranes, the ligand derivatives exo-5-(NR3)-hypho-4,9-C2B7H13 (4a and 4b, where R = Me and Et, respectively) in moderate yields (20 - 55%), whereas the reaction between 1 and aqueous NaCN results in the selective removal of one boron vertex to yield the eight-vertex [hypho-7,8-C2B6H13]- anion (5) in 61% yield. All compounds isolated were characterized by 11B and 1H NMR spectroscopy, with two-dimensional and selective decoupling techniques giving unambiguous assignments.

Characterization of tri-o-methylcellulose by one- and two-dimensional NMR methods

1999 ◽  
Vol 37 (21) ◽  
pp. 4019-4032 ◽  
Author(s):  
Navzer D. Sachinvala ◽  
Othman A. Hamed ◽  
David L. Winsor ◽  
Walter P. Niemczura ◽  
Karol Maskos ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Nmr Methods
Sign in / Sign up

Export Citation Format

Share Document