Enantioselective synthesis of the aminoimidazole segment of dragmacidin D
摘要:
A facile enantioselective synthesis of the 2-aminoimidazole side-chain of dragmacidin D has been developed. which involved the regio- and stereoselective opening of the chiral epoxide 9 by a diindolylcuprate reagent, followed by further steps to give 5-substituted N-(1H-imidazol-2-yl)acetamide 2. (C) 2002 Elsevier Science Ltd. All rights reserved.
Enantioselective synthesis of the aminoimidazole segment of dragmacidin D
摘要:
A facile enantioselective synthesis of the 2-aminoimidazole side-chain of dragmacidin D has been developed. which involved the regio- and stereoselective opening of the chiral epoxide 9 by a diindolylcuprate reagent, followed by further steps to give 5-substituted N-(1H-imidazol-2-yl)acetamide 2. (C) 2002 Elsevier Science Ltd. All rights reserved.
Preparing Functional Bis(indole) Pyrazine by Stepwise Cross-coupling Reactions: An Efficient Method to Construct the Skeleton of Dragmacidin D
作者:Cai-Guang Yang、Gang Liu、Biao Jiang
DOI:10.1021/jo026450m
日期:2002.12.1
properly substituted bis(indole) pyrazine, the skeleton of a marine alkaloid dragmacidin D, has been developed. The key steps involved the regioselective introduction of two indole units, using the palladium(0)-catalyzed Suzuki and the Stille cross-couplingreactions sequentially.