Structure of a boron‐free hydrolysis product from Boromycin

Abstract

Abstract The structure of des ‐boron‐ des ‐valine‐boromycin C 40 H 68 O 14 · H 2 O (DBDVB), the product obtained by hydrolysis of the antibiotic boromycin C 45 H 74 BNO 15 , has been determined by X‐ray analysis. The molecule is remarkably similar in constitution, configuration and even in conformation to those of boromycin and des ‐valine‐boromycin determined previously [2], showing that the overall molecular shape is retained on removal of the spiro boron atom.