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Acetylenic glucosides from Microglossa pyrifolia
G Rücker1, S Kehrbaum, H Sakulas
1Pharmazeutisches Institut, Rheinische Friedrich-Wilhelms-Universität Bonn, Federal Republic of Germany.
Planta Medica
|June 1, 1992
Abstract:
From the leaves of Microglossa pyrifolia Lam. (Asteraceae) four new acetylenic glucosides (1-4) have been isolated. The aglucones 2a and 4a are new polyynes. The aglucone 3a could only be isolated as a mixture of E/Z-isomers in a ratio of 4:1. The structures of 1-4 were elucidated by spectroscopic and biochemical methods. Compound 1 shows antibacterial activity.