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- Title
Asymmetric Synthesis of Dihydrospirotryprostatin B via a Silica Gel‐Mediated Cyclization of Tryptamine‐Ynamide.
- Authors
Han, Changhong; Yang, Lu; Yao, Kaizong; Zhang, Sen; Fu, Jiayue; Sun, Hanyang; Xu, Hongsheng; Lin, Bin; Cheng, Maosheng; Liu, Yongxiang
- Abstract
Comprehensive Summary: An asymmetric synthesis of dihydrospirotryprostatin B was achieved in 15 steps (8 purifications) from L‐tryptophan. The main feature of our synthetic strategy is the efficient construction of spirocyclic oxindole intermediate containing a chiral quaternary carbon center, involving the silica gel‐mediated cyclization of tryptamine‐ynamide and oxidation under neat conditions.
- Subjects
ASYMMETRIC synthesis; RING formation (Chemistry); SILICA; OXIDATION; TRYPTOPHAN
- Publication
Chinese Journal of Chemistry, 2024, Vol 42, Issue 12, p1355
- ISSN
1001-604X
- Publication type
Article
- DOI
10.1002/cjoc.202300727