Two New Analogues of the Cytotoxic Substance BE-52211 from Streptomyces sp.

Abstract
Two new β-hydroxy acetamides, BE-52211 B and BE-52211 C, which were structural analogues of BE-52211, were obtained as an inseparable mixture from an actinomycete, Streptomyces sp. Their structures were elucidated on the basis of spectroscopic data. They inhibited cell division of starfish embryos at a concentration of 2.5 μg/mL or greater.