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Amides from Piper brachystachyum and Piper retrofractum
Avijit Banerji1, Manjusha Sarkar, Ratna Datta
1Centre 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
Phytochemistry
|April 9, 2002
Abstract:
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.