A New Inhibitor of Synovial Phospholipase A2 from Fermentations of Penicillium Sp. 62-92

Zeitschrift für Naturforschung C
1998.0

Abstract

<jats:title>Abstract</jats:title> <jats:p>Penidiamide, a new tripetide containing dehydrotryptamine, glycine and anthranilic acid linked together by two amide bonds, and oxindole were isolated from submerged cultures of Penicillium sp. 62-92 . Both compounds preferentially inhibited human synovial phospholipase A<jats:sub>2</jats:sub>, penidiamide with an IC<jats:sub>50</jats:sub> of 30 μᴍ and oxindole of 380 μᴍ. With the exception of U 937 cells (leukemia, human), no cytotoxic activities were detected against HL-60- (leukemia, human), HeLa S3- (epitheloid carcinoma, human), BHK 21- (kidney fibroblasts, hamster), and L1210-cells (leukemia, mouse). No antimicrobial activity was detected for oxindole, and only weak antibacterial activity for penidiamide. The structure of penidiamide was elucidated by spectroscopic methods.

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