Amides from Piper brachystachyum and Piper retrofractum.
Three unsaturated amides, designated brachystamides-C, D and E have been characterised from Piper brachystachyum Wall. Brachystamide-C, shown to be N-isobutyl-15-(3',4'-methylenedioxyphenyl)-2E,4E,13E-pentadecatrienamide, was unusual in having a non-conjugated double bond. Piper retrofractum Vahl. yielded retrofractamide-D, which has been fully characterised.
Banerji
Avijit
A
Centre of Advanced Studies on Natural Products, Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, 700 009, Calcutta, India. ab@cucc.ernet.in
Sarkar
Manjusha
M
Datta
Ratna
R
Sengupta
Piyali
P
Abraham
Koshy
K
D000577:Amides / Q000737:chemistry* / Q000302:isolation & purification; D026321:Piperaceae / Q000737:chemistry*
D000577:Amides; C465330:brachystamide-C; C465331:brachystamide-D; C465332:brachystamide-E; C465333:retrofractamide-D