Checking the purity of the cold solid products after dissolution in CH 2 Cl 2 at ร 78 8C showed in the case of 1 and 2 degrees of decomposition of up to 10 % and for the thermally more sensitive product 3 up to 30 %.
โฆ LIBER โฆ
Synthesis of the optically active key intermediate of FR901483
โ Scribed by Shigeru Ieda; Toshiyuki Kan; Tohru Fukuyama
- Book ID
- 104097877
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- French
- Weight
- 454 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
Efficient synthesis of the tricyclic key intermediate 2 for (ร)-FR901483 1 was accomplished. The precursor of the intramolecular aldol reaction 4b is constructed by the Ugi 4CC reaction and subsequent intramolecular Dieckmann condensation. This approach allows a fully stereocontrolled total synthesis of (ร)-FR901483, which would provide various derivatives.
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