When preparation of optically active synthetic intermediate is attempted by ordinary chemical resolution of racemic compound, maximum 50% of the resolution substrate can only be utilized for further synthetic scheme. Aiming to overcome this inefficiency, the authors have developed the new methodolog
An efficient synthesis of optically pure anthracyclinone intermediates by the novel use of microbial reduction
β Scribed by Shiro Terashima; Katsumi Tamoto
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- French
- Weight
- 281 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
Reduction of the racemic a-hydroxy ketones((?)-3&) with fermenting baker's yeast followed by fractional recrystallization and oxidation was found to readily afford optically pure anthracyclinone intermediates((R and their partially optically active antipodes ((S)(+)-m The useless enantiomers((S)(+)-m and diastereomeric viclnal-diols((+)-
π SIMILAR VOLUMES
Sumnary (\*)-7-Deoxy-4-demethoxydaunomyclnone((f) was cleanly resolved by forming a mixture of the dlastereomenc acetals((-)-2 and (+)-12 or (+)-zand (-)-19 with the title zm-dlol((+)-or (-)-g to give optically pure (R)(-)-A The method for racemizing the undesired enantiomer((S)(+)-2) was also explo
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v