of epothilone A via organoboranes have been described. A modified procedure for the large-scale preparation of B-gamma,gamma-dimethylallyldiisopinocampheylborane from prenyl alcohol has been developed. This reagent, upon reaction with various aldehydes, provides the corresponding alpha,alpha-dimethylhomoallylic alcohols in high enantioselectivities. The application of this reagent for the synthesis of
Synthetic approaches to pederin. A synthesis of pederol dibenzoate
作者:Kim Isaac、Philip Kocienski
DOI:10.1039/c39820000460
日期:——
A newsynthesis of functionalized tetrahydropyran-4-ones based on an intramoleculardirectedaldolcondensation has been applied to a key fragment of pederin.
基于分子内定向羟醛缩合的功能化四氢吡喃-4-酮的新合成已被应用于pederin的关键片段。
Preparative-scale synthesis of both antipodes of B-γ,γ-dimethylallyldiisopinocampheylborane: application for the synthesis of C1–C6 subunit of epothilone
作者:P.Veeraraghavan Ramachandran、Bodhuri Prabhudas、J.Subash Chandra、M.Venkat Ram Reddy、Herbert C. Brown
DOI:10.1016/j.tetlet.2003.11.087
日期:2004.1
A preparative-scale synthesis of B-gamma,gamma-dimethylallyldissopinocampheylborane starting from prenyl alcohol has been described. This reagent, upon reaction with various aldehydes, provides the corresponding alpha,alpha-dimethylhomoallylic alcohols in high enantioselectivities. The application of this reagent has been demonstrated for the synthesis of C-1-C-6 Subunit of epothilone. (C) 2003 Elsevier Ltd. All rights reserved.
Allylboration-reactions, the key to a short synthesis of benzoyl-pedamide
作者:Reinhard W. Hoffmann、Achim Schlapbach
DOI:10.1016/s0040-4020(01)88867-0
日期:1992.1
Benzoyl-pedamide (2) a key building block for the synthesis of pederin, has been synthesized in 13 steps from malic acid. The new stereogenic centers have been generated under reagent control of diastereoselectivity with selectivities of 87 and 80% using the newly developed chiral alpha-substituted allylboronate 16 as well as 21 as reagents.
WILLSON, TIMOTHY M.;KOCIENSKI, PHILIP;JAROWICKI, KRZYSZTOF;ISSAC, KIM;HIT+, TETRAHEDRON, 46,(1990) N, C. 1767-1782