期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 24, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202201584
关键词
Desymmetrization; Fused Ring Systems; Ladderane; Natural Products; Organocatalysis
资金
- Science and Engineering Research Board (SERB), New Delhi [EMR/2016/005045]
- Ministry of Education, Government of India
- Council of Scientific and Industrial Research (CSIR)
- Department of Science and Technology (DST)-FIST grant [SR/FST/CS II-040/2015]
In this study, a total synthesis of [3]-ladderanol was achieved using a novel desymmetrizing reaction strategy. The synthetic method is concise and efficient, and can be applied to the synthesis of similar molecules.
Ladderane phospholipids, with their unusual ladder-like arrangement of concatenated cyclobutane rings, represent an architecturally unique class of natural products. However, despite their fascinating structure and other necessary impetus, only a few synthetic studies of these molecules have been reported so far. We have now devised a concise total synthesis of [3]-ladderanol, a component of natural ladderane phospholipids, using an organocatalytic enantioselective desymmetrizing formal C(sp(2))-H alkylation. Our synthetic strategy rests on the late-stage introduction of chirality, thus allowing facile access to both enantiomers of [3]-ladderanol as well as an analogue. This is the first time a desymmetrization strategy is applied to the synthesis of [3]-ladderanol. The scope of this desymmetrizing C(sp(2))-H alkylation of meso-cyclobutane-fused cyclohexenediones is also presented.
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