A diversity oriented synthesis of natural product inspired molecular libraries

2017 ◽  
Vol 15 (43) ◽  
pp. 9108-9120 ◽  
Author(s):  
Jyoti Chauhan ◽  
Tania Luthra ◽  
Rambabu Gundla ◽  
Antonio Ferraro ◽  
Ulrike Holzgrabe ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Natural Product ◽  
Diversity Oriented Synthesis ◽  
Molecular Libraries ◽  
Tryptophan Methyl Ester

Diversity oriented synthesis of natural product inspired compounds from S-tryptophan methyl ester.

scholarly journals Cyclic Lipopeptides with Herbicidal and Insecticidal Activities Produced by Bacillus clausii DTM1

2015 ◽  
Vol 10 (12) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Da-Le Guo ◽  
Bo Wan ◽  
Shi-Ji Xiao ◽  
Sarah Allen ◽  
Yu-Cheng Gu ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Natural Product ◽  
Fermentation Broth ◽  
Cyclic Lipopeptides ◽  
Bacillus Clausii ◽  
Cyclic Lipopeptide ◽  
Lipopeptide Biosurfactants ◽  
First Time ◽  
Insecticidal Activities

Seven cyclic lipopeptide biosurfactants (1–7) were isolated for the first time from the fermentation broth of endophytic Bacillus clausii DTM1 and were identified as anteisoC13[Val7] surfactin-(L-Glu)-O-methyl-ester (1), anteisoC12[Val7] surfactin (2), anteisoC15[Val7] surfactin (3), isoC14[Leu7] surfactin (4), anteisoC12[Leu7] surfactin (5), nC13[Leu7] surfactin (6), and anteisoC14[Leu7] surfactin-(L-Glu)-O-methyl-ester (7); 1 has not been isolated before as a natural product from any source. Plate-based herbicide and insecticide bioassays showed that all compounds exhibited interesting insecticidal and herbicidal activities.

scholarly journals Isolation and Preparation of ent-2,3-Secobeyer-15-en-2,3-dioic acid, 3-methyl ester- A Natural Product from Spirostachys africana

2007 ◽  
Vol 2 (7) ◽  
pp. 1934578X0700200
Author(s):  
Namboole Moses Munkombwe ◽  
Disah Dijogadifele ◽  
Ngonye Sabure
Keyword(s):  
Methyl Ester ◽  
Natural Product ◽  
Spectroscopic Methods ◽  
Dioic Acid

A new secobeyerenoic acid mono ester, ent-2,3-secobeyer-15-en-2,3-dioic acid, 3-methyl ester was isolated from the heartwood of Spirostachys africana and identified using spectroscopic methods. The mono ester was also prepared using two methods; by reacting the known diacid, ent-2,3-secobeyer-15-en-2,3-dioic acid with 1.5 mole equivalency of diazomethane, and methanolysis of ent-2,3-secobeyer-15-en-2,3-dioic anhydride.

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