Structural Revision of (+)-Uprolide F Diacetate Confirmed by Asymmetric Total Synthesis

被引:24
作者
Zhu, Liangyu [1 ]
Tong, Rongbiao [1 ]
机构
[1] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
基金
中国国家自然科学基金;
关键词
MARINE NATURAL-PRODUCTS; CORAL SARCOPHYTON-CRASSOCAULE; BAYLIS-HILLMAN REACTION; METHYLENE-GAMMA-BUTYROLACTONES; GORGONIAN EUNICEA-MAMMOSA; SOFT CORAL; STEREOSELECTIVE-SYNTHESIS; SINULARIA-FLEXIBILIS; EUPALMERIN ACETATE; UPROLIDE-D;
D O I
10.1021/acs.orglett.5b00700
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A new structure for the cytotoxic cembranolide uprolide F diacetate (UFD) was proposed, and an enantioselective total synthesis was accomplished to confirm that our revised structure correctly represented the natural UFD and its absolute configuration. Our synthesis features a late-stage, highly efficient, and diastereoselective NozakiHiyamaKishi macrocyclization (95% yield) and an unexpected reagent-controlled reversible translactonization, which, being the first example within the cembranolide family, might have biogenetic implications and be of great importance to synthetic studies of the a-methylene-?-lactone-bearing cembranolides.
引用
收藏
页码:1966 / 1969
页数:4
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