Asymmetric synthesis of quinolizidine alkaloids (-)-lasubine I, (-)-lasubine II and (+)-subcosine II
Asymmetric synthesis of quinolizidine alkaloids (-)-lasubine I, (-)-lasubine II and (+)-subcosine II
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DOI:
10.1016/s0957-4166(98)00468-6
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发表时间:
1998-12-24
影响因子:
--
通讯作者:
Gramain, JC
中科院分区:
文献类型:
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作者:
Chalard, P;Remuson, R;Gramain, JC
The enantioselective synthesis of (-)-lasubine I 1 and the first asymmetric synthesis of (-)-lasubine II 2 and (+)-subcosine II 3 is described. The key step is the intramolecular cyclization of N-acyliminium ion 4 which is derived from (S)-aminoester 6. (C) 1998 Elsevier Science Ltd. All rights reserved.