Quassin and Neoquassin
✍ Scribed by Z. Valenta; S. Papadopoulos; C. Podešva
- Book ID
- 103390166
- Publisher
- Elsevier Science
- Year
- 1961
- Tongue
- French
- Weight
- 775 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0040-4020
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📜 SIMILAR VOLUMES
THE constituents of Quassia amara have been thoroughly investigated by Robertson l-5 . He found that the bitter extract consists of quassin, Cs2H2s06, and Cs2Hs006, which are in a lactone-hemiacetal relationship. Quassin contains two methoxyl groups, at least three Cmethyl groups and no active hydro
The reduction of quassin (3) with sodium borohydride in the presence Of alkali was investigated. The process appeared to be regio-and stereo-selective leading to &, which was utilized for the preparation of Z-epi-castelanolide-methylcthcr (G). The structure of quassfn, \_?\_a, the most famous member