An unprecedented 1,5‐ or 1,6‐alkyl transposition reaction of 3‐deoxy glycals led to the formation of various carbon‐branched bicyclic frameworks.
3-脱氧糖的史无前例的1,5或1,6-烷基转座反应导致形成各种碳支化的双环骨架。
Bidirectional Synthesis of the IJK Fragment of Ciguatoxin CTX3C by Sequential Double Ring-Closing Metathesis and Tsuji–Trost Allylation
作者:Michael Popadynec、Helen Gibbard、J. Stephen Clark
DOI:10.1021/acs.orglett.0c01238
日期:2020.5.1
A novel four-step bidirectional strategy has been used to synthesize the IJK fragment of the marine polyether natural product CTX3C from a simple monocyclic precursor in a concise and efficient manner. The four-step bidirectional sequence involves ring-closing metathesis, alcohol oxidation, enol carbonate formation, and palladium-mediated Tsuji-Trost allylation.
OKABE, MASAMI;SUN, RUEN-CHU, TETRAHEDRON LETT., 30,(1989) N7, C. 2203-2206
作者:OKABE, MASAMI、SUN, RUEN-CHU
DOI:——
日期:——
US3953422A
申请人:——
公开号:US3953422A
公开(公告)日:1976-04-27
Synthesis of the A–D Ring System of the Gambieric Acids
作者:J. Stephen Clark、Filippo Romiti、Bora Sieng、Laura C. Paterson、Alister Stewart、Subhabrata Chaudhury、Lynne H. Thomas
DOI:10.1021/acs.orglett.5b02093
日期:2015.10.2
The A–D fragment of gambiericacids A and C has been synthesized using an asymmetric Tsuji–Trost allylation reaction to couple the two key segments. The A ring fragment has been prepared by a short and highly efficient route involving diastereoselective Lewis acid mediated alkylation of an acetal. Iterativering-closingmetathesis reactions have been used to construct cyclic ethers and assemble the