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■ Synthetic Studies of Liposidomycin Degradation Product: Attempt for Introduction of an Uracil Group

Shouhei Fukunishi, Makoto Ubukata, and Noriyuki Nakajima*

*Biotechnology Research Center, Toyama Prefectural University, 5180 Kurokawa, Kosugi, Toyama 939-0398

Abstract

Toward the synthesis of liposidomycin degradation product, the introduction of a uracil group was studied. In the presence of an N-methyl group on the diazepanone ring, the introduction of a uracil group failed. The O-nitrobenzenesulfonyl (Ns) protecting group played an important role for the introduction of a uracil group.