Silicon-mediated asymmetric synthesis of fagomine and 3,4-di-epi-fagomine
摘要:
The synthesis of D-fagomine and its stereoisomer, D-3,4-di-epi-fagomine has been achieved from C(2)-symmetric 3,4-bis-silyl substituted adipic acid di-oxazolidin-2-one derivatives via stereocontrolled azidation and silicon to hydroxyl conversion as the key steps. The Evans oxazolidin-2-one controlled the stereochemical outcome of the azidation which supersedes the directing effects of the silyl substituent. (C) 2011 Elsevier Ltd. All rights reserved.
Silicon-mediated asymmetric synthesis of fagomine and 3,4-di-epi-fagomine
摘要:
The synthesis of D-fagomine and its stereoisomer, D-3,4-di-epi-fagomine has been achieved from C(2)-symmetric 3,4-bis-silyl substituted adipic acid di-oxazolidin-2-one derivatives via stereocontrolled azidation and silicon to hydroxyl conversion as the key steps. The Evans oxazolidin-2-one controlled the stereochemical outcome of the azidation which supersedes the directing effects of the silyl substituent. (C) 2011 Elsevier Ltd. All rights reserved.