The reaction of -(N-t-butoxycarbonyl)amino-,-ethylenic esters with OsO 4 yields the corresponding ,-dihydroxy compounds with good diastereoselectivity. The crystal structure of the major stereomer, (2SR,3SR,4RS)-Me 2 CHC\\forcelb]H(NHCO 2 t Bu)CHOHCHOHCO 2 t Bu, C 16 H 31 NO 6 , shows that the relat
Phenacyl (2S,4S)-1-tert-butoxycarbonyl-4-hydroxyprolinate
✍ Scribed by Chabaud, Pauline ;Worf, Monica ;Courcambeck, Jérôme ;Camplo, Michel ;Pèpe, Gérard
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 129 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
The title compound, C 27 H 39 N 3 O 9 , is a key intermediate in the synthesis of novel -turn mimetics based on electrophilic amination of enantiomerically pure (S)-pyroglutamic acid. The molecule adopts an extended conformation which is not stabilized by either intra-or intermolecular hydrogen bond
Umsetzung von Cholesterylchloroformat rnit 4-snbstituierten Acetophenonoximen 171. Fur die Herstellung cholesterinischer Phasen, die interessante anwendungstechnische Aspekte haben, werden jedoch Derivate von optisch-aktiven Alkoholen und Carbonsauren bevorzugt eingesetzt. Wir synthetisierten chole
The relative con®guration of the title compound, C 18 H 27 NO 4 , was determined as being R,S,S,S. There are three crystallographically independent molecules in the asymmetric unit, which show only slight conformational differences. Molecules in the crystal structure are connected by hydrogen bonds