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ChemInform Abstract: Toward a Total Synthesis of Pristinamycin IIB; a Chiron Approach to a C-9/C-16 Fragment.
β Scribed by P. BREUILLES; D. UGUEN
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 39 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Toward a Total Synthesis of Pristinamycin II B ; a Chiron Approach to a C-9/C-16 Fragment.
-Starting from readily available (S)-malic acid derivative (I), an appreciable amount (ca. 2 g) of the title fragment (XV) is prepared using the Grignard reaction of the propargyl diol (VI) as the key step. The regioisomeric products (VIII) and (IX) are separated via their diphenyl-t-butoxysilyl ethers. -(BREUILLES, P.;
π SIMILAR VOLUMES
Synthetic Approaches to Rapamycin. Part 2. A Synthesis of a C21-C42 Fragment. -The synthesis of the C21-C42 fragment (XI) of the highly cytotoxic and potent immunosuppressive rapamycin is performed by coupling of the sub-fragments (VIII)-(X). Highlights of the preparation are the introduction of th