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■ A Total Synthesis of (±)-Fendleridine

Yasushi Honma, Takeshi Ohnuma, and Yoshio Ban*

*Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan

Abstract

The oxidative cyclization of the aminoalcohol (7) with mercuric acetate gave (±)-fendleridine (1a). In this synthetic course, the reduction product of N-tosyl vinylogous amide (3) with lithium aluminum hydride was now further purified, and the former assignment of the structure (4) was revised to be 5, based upon the chemical and spectroscopic evidences.