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Trifluoroacetylation and Dehydration of 20-Hydroxyecdysone Acetonides. Synthesis of Stachisterone B.

✍ Scribed by V. N. Odinokov; I. V. Galyautdinov; D. V. Nedopekin; L. M. Khalilov


Publisher
John Wiley and Sons
Year
2003
Weight
162 KB
Volume
34
Category
Article
ISSN
0931-7597

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Base-catalyzed autoxidation of 20-hydrox
✍ Apichart Suksamrarn; Penpan Ganpinyo; Chatriwat Sommechai πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 French βš– 268 KB

Base-catalyzed autoxidation of 20-hydroxyecdysone (2) gave an unusually modified ecdystemid calonysterone (1) and 9,20\_dihydroxyecdysone (4). In the course of an investigation of the minor ecdysteroids in Vita plants, we isolated a small quantity