First total synthesis of (+)-crassalactone A
β Scribed by V. Shekhar; D. Kumar Reddy; V. Suresh; D. Chanti Babu; Y. Venkateswarlu
- Book ID
- 104097241
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- French
- Weight
- 245 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
A simple and highly efficient first total synthesis of cytotoxic (+)-crassalactone A starting from (R)-mandelic acid is described. The strategy involves the osmium tetroxide-catalyzed cis-hydroxylation and the stereoselective addition of ethyl lithiopropiolate to a chiral aldehyde intermediate as key steps.
π SIMILAR VOLUMES
The first total synthesis of (+)-crassalactone B (2) and a new syntheses of (+)-crassalactone C (3) has been achieved starting from D-glucose. The natural products 2 and 3 can be selectively accessed by changing the conditions for TBDPS cleavage in the final intermediate 16. The synthesized natural