Synthetic approaches to Cinchona alkaloids: the C-8/C-9 disconnection strategy
✍ Scribed by Raphaël Jankowski; Delphine Joseph; Christian Cavé; Françoise Dumas; Michèle Ourevitch; Jacqueline Mahuteau; Georges Morgant; Nada Bosnjaković Pavlović; Jean d'Angelo
- Book ID
- 104253655
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- French
- Weight
- 164 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
When conducted in DMSO, the Hu ¨nig's base-promoted condensation of 3-quinuclidinone with quinoline-4-carboxaldehyde gave an equimolar mixture of epimeric aldols 8 with an excellent yield.
📜 SIMILAR VOLUMES
A ncw approach to 5-acetamido-3.5-dideoxy-~-g/ycero-~-u/fro-2iionulopyranosonic acid (6; 7,8-bis-epi-NeuSAc) and S-acetamido-.~,~-dideoxy-D-y/ycrro-L-aIrro-?-nonulopyranosonic acid (9; 'I-epi-Ncu5Ac) is prcsented.
An efficient and stereoselective approach to the synthesis of coenzyme Q 10 is described (Scheme). The MeOCH 2 -protected p-hydroquinone 4 containing the C 5 (E)-allyl (tert-butyl)dimethylsilyl ether moiety was obtained via a halogen -lithium exchange of the MeOCH 2 -proctected 2-bromo-5,6dimethoxy-