Stereochemistry of hydride reductions. The tricyclo[9.3.1.0.3,8]pentadecane (taxane) ring system
β Scribed by K.J. Shea; Richard G. Higby; Jeffrey W. Gilman
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- French
- Weight
- 253 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
ture and oxygen over a long period of time[4a1. It was also obtained by reaction of 4 with elemental sulfur (60% yield). Reaction of 2 with chlorine affords 2,4,6-tri-tert-butylphenyfphosphonic dichloride almost quantitatively after hydrolysis'za1. The yields of compounds 2, 3[4b1, and 4 (20-60%, 1
## Abstract The feasibility of the titled reactions for the rapid, enantioselective synthesis of __cis__βtricyclo[9.3.1.0^3,8^]pentadecane precursors to taxusin and taxol has been examined. The catalysts most well suited to inducing the appropriate 1,2βshifts have been identified. To a great extent