A concise and optimized four-step approach toward 2-(aryl-)alkylsulfanyl-, 4(5)-aryl-, 5(4)-heteroaryl-substituted imidazoles using alkyl- or arylalkyl thiocyanates
摘要:
A convenient cyclization method leading to trisubstituted imidazoles in up to 84% yield is reported. Diverse 1-aryl-, 2heteroaryl-substituted ethanones are converted into the corresponding alpha-oximino derivatives which are reduced under regioselective conditions. The obtained alpha-amino carbonyl intermediates are reacted with alkyl- or arylalkyl thiocyanates to directly yield C(2)-S-substituted imidazole. (c) 2006 Elsevier Ltd. All rights reserved.
A concise and optimized four-step approach toward 2-(aryl-)alkylsulfanyl-, 4(5)-aryl-, 5(4)-heteroaryl-substituted imidazoles using alkyl- or arylalkyl thiocyanates
摘要:
A convenient cyclization method leading to trisubstituted imidazoles in up to 84% yield is reported. Diverse 1-aryl-, 2heteroaryl-substituted ethanones are converted into the corresponding alpha-oximino derivatives which are reduced under regioselective conditions. The obtained alpha-amino carbonyl intermediates are reacted with alkyl- or arylalkyl thiocyanates to directly yield C(2)-S-substituted imidazole. (c) 2006 Elsevier Ltd. All rights reserved.
[EN] IMIDAZOLE DERIVATIVES AND THEIR USE AS CYTOKINE INHIBITORS
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:WO1993014081A1
公开(公告)日:1993-07-22
(EN) Novel 2,4,5-triarylimidazole compounds and compositions for use in therapy.(FR) Nouveaux composés 2,4,5-triarylimidazole et compositions s'utilisant en thérapie.