Exploiting the Maitland–Japp reaction: a synthesis of (±)-centrolobine
摘要:
Application of our one-pot, three-component variation of the Maitland-Japp reaction has led to the formation of a tetrahydropyran-4-one. which was converted in three steps to the antiparasitic and antibiotic natural product (+/-) centrolobine. (c) 2005 Elsevier Ltd. All rights reserved.
Exploiting the Maitland–Japp reaction: a synthesis of (±)-centrolobine
摘要:
Application of our one-pot, three-component variation of the Maitland-Japp reaction has led to the formation of a tetrahydropyran-4-one. which was converted in three steps to the antiparasitic and antibiotic natural product (+/-) centrolobine. (c) 2005 Elsevier Ltd. All rights reserved.
An Environmentally Benign Synthesis of <i>cis</i>-2,6-Disubstituted Tetrahydropyrans via Indium-Mediated Tandem Allylation/Prins Cyclization Reaction
作者:Minh Pham、Amir Allatabakhsh、Thomas G. Minehan
DOI:10.1021/jo7016857
日期:2008.1.1
cis-2,6-disubstituted tetrahydropyrans in good yields. Evidence suggests that InI, formed upon aldehyde (R1CHO) allylation in aqueous media, acts as a promoter for the silyl-Prins reaction with the second equivalent of added aldehyde (R2CHO). The preparation of cyclohexenyl-fused pyrans via this one-pot, three-component coupling process is presented, as is a short formal synthesis of (±)-centrolobine
An expedient synthesis of the antibiotic natural product centrolobine is reported, the key step being the one pot, multicomponent construction of a tetrahydropyran-4-one via a 'revisited' Maitland-Japp reaction. (C) 2004 Elsevier Ltd. All rights reserved.