Fujiwara T, Watanabe H, Kogami Y, Shiritani Y, Sakakibara H
Research Laboratories, Toyo Jozo Co., Ltd., Shizuoka, Japan.
J Antibiot (Tokyo). 1989 Jun;42(6):903-12. doi: 10.7164/antibiotics.42.903.
19-Deformyl-4'-deoxydesmycosin was synthesized by the following synthetic route: 19-Deformylation of desmycosin, 3,2',4''-tri-O-trimethylsilylation, 4'-O-sulfonylation, 4'-iodination, reductive deiodination and 3,2',4''-tri-O-detrimethylsilylation. Deformylation of the aldehyde group at the C-19 position was achieved by two different methods: A) A simple one-step deformylation using Wilkinson's catalyst ((Ph3P)3RhCl). B) Reductive decarboxylation of the 19-carboxyl derivative following NaClO2 oxidation of the aldehyde. 19-Deformyl-4'-deoxydesmycosin showed very strong antimicrobial activity in vitro and in vivo.
