Toward the total synthesis of scytophycins: Synthesis of the C7-C21 fragments of scytophycins A, B, and C

被引:1
|
作者
Ohyoshi, Takayuki [1 ]
Namiki, Mayu [1 ]
Miyazaki, Yuto [1 ]
Sato, Shusei [1 ]
Noguchi, Tomonari [1 ]
Kigoshi, Hideo [1 ]
机构
[1] Univ Tsukuba, Fac Pure & Appl Sci, Dept Chem, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058571, Japan
关键词
Scytophycins; Cytotoxic macrolide; Diversity-oriented synthesis; Epoxidation; 4-Reduction; CONJUGATE REDUCTION; C(1)-C(18) SEGMENT; COUPLING REACTION; CHLORIDE; AGENTS;
D O I
10.1016/j.tetlet.2022.154250
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Scytophysins are cytotoxic macrolides with a 22-membered ring and are characterized by their strong cytotoxicities targeting cytoskeletal protein actin. Toward the comprehensive total synthesis of scytophycins, we have investigated the late-state functionalization using fragment compounds. We established stereoselective construction of the C7-C21 part in scytophycins A and B involving characteristic C16 epoxide by using Sharpless epoxidation. Although stereoselectivity remains unsatisfactory, reduction of the C16 exo-olefin for the synthesis of scytophycin C was achieved.(c) 2022 Elsevier Ltd. All rights reserved.
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页数:5
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