Synthesis of (-)-sordarin

Synthesis of (-)-sordarin
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DOI:
10.1021/ja060408h
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发表时间:
2006-05-31
影响因子:
15
通讯作者:
Narasaka, Koichi
Narasaka, Koichi
中科院分区:
化学1区
文献类型:
--
作者:
Chiba, Shunsuke;Kitamura, Mitsuru;Narasaka, Koichi

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利用以下关键反应完成了(-)-索达菌素(1)的首次全合成:(i)Ag(I)催化的环丙醇衍生物的氧化自由基环化,得到双环[5.3.0]癸烷-3-酮骨架;(ii)Pd(0)催化的分子内烯丙基化反应,得到索达菌素(2)的整个应变双环[2.2.1]庚烷-2-酮骨架;(iii)通过OsO 4和PhB(OH)(2)的组合使用,末端烯烃的选择性二羟基化;和(iv)通过4-甲氧基苯甲酰基的1,3-邻位异构辅助,β(1,2-顺式)-选择性糖苷化。
The first total synthesis of (-)-sordarin (1) was accomplished exploiting the following key reactions: (i) Ag(I)-catalyzed oxidative radical cyclization of a cyclopropanol derivative leading to a bicyclo [5.3.0]decan-3-one skeleton; (ii) Pd(0)-catalyzed intramolecular allylation reaction resulting in the entire strained bicyclo[2.2.1] heptan-2-one framework of sordaricin (2); (iii) selective dihydroxylation of terminal alkenes by the combined use of OsO4 and PhB(OH)(2); and (iv) beta(1,2-cis)-selective glycosidation via a 1,3-anchimeric assistance from a 4-methoxybenzoyl group.