Abstract
Three compounds, NP25301 (1), NP25302 (2) and bohemamine (3), inhibitors of cell adhesion based on LFA-1/ICAM-1, were isolated from the cultured broth of the strain Streptomyces sp. UMA-044. New compounds 1 and 2 were identified as 2-(3'-carbamoylphenoxy)acrylic acid methyl ester and deoxybohemamine, respectively, based on spectroscopic analyses. Compounds 1 approximately 3 inhibited adhesion of HL-60 cells to CHO-ICAM-1 cells at IC50 values of 29.5 microg/ml for 1, 24.3 microg/ml for 2, and 27.2 microg/ml for 3.
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