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Studies on a forskolin ring C forming reaction |
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| Authors: | Stefan Hamm Silke Zimmermann Lothar Hennig Dietrich Müller Peter Welzel |
| Institution: | aUniversität Leipzig, Institut für Organische Chemie, Johannisallee 29, D-04103 Leipzig Germany bFakultät für Chemie der Ruhr-Universität, D-44780 Bochum Germany |
| Abstract: | Results are reported that indicate that the rearrangement of hydroxy epoxide 2a to dihydropyran 3 which occurs with retention of configuration at C-8 proceeds either via a carbocation intermediate or by two successive substitution reactions, both with inversion of configuration. |
| Keywords: | Epoxides diterpenes mechanism stereochemistry substitution |
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