A simple route for the enanrioselective synthesis of key intermediates (11 and 12) for the total synthesis of forskolin has been developed starting from acid 6 and (S)-alcohol 5. The latter is prepared by enantioselective catalytic CBS reduction of dienone 3, and is converted by an intramolecular Di
A highly efficient route to a key intermediate for the synthesis of A prostaglandins
β Scribed by E.J. Corey; Paul A. Grieco
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- French
- Weight
- 139 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The iodo lactone I, which has been used as a key intermediate for the synthesis of the six natural primary prostaglandins, is readily available by a synthetic process in which the average yield per step is 95% (l-4). Although the A prostaglandins can be derived from the primary E prostaglandins by dehydration
π SIMILAR VOLUMES
We have undertaken a synthesis of this substance as part of a broader program in the area of biologically active macrocyclic natural products. One attractive approach to the synthesis of maytansine involves the introduction of chiraltty at carbons 3, 4, 5, 10, and 9 after formation of the macro ring
received in U.K. for publication 8 Iiovember 1971) 11-Desoxyproetaglandlna are of considerable current interest as possible substrates for mlcrobiological hydroxylatlon at C(ll) (pro&mold numbering) and elsewhere, as poaslble antagonlsta of the prostagl&dlns in the E and F series, and as hypotenslve
## Abstract A total synthesis of the biologically potent jatrophane diterpenes pepluanin A (**1**) and euphosalicin A (**2**) is being aimed at. __En route__ to these targets, a concise synthesis of the nonracemic cyclopentane building block **74** was developed. Key steps were a __ClaisenβEschenmo