Slow inversion of stereoisomers of cyclic GABA analogues
✍ Scribed by Roman Gancarz; Rafał Latajka; Agnieszka Halama; Paweł Kafarski
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 602 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
In 31 P NMR spectra of derivatives of 1-amino-and 1-hydroxypiperid-4-ylphosphonic acids, fully reversible conformational equilibria in aqueous and methanolic solutions were observed. Depending on the pH of the medium and temperature, one or two phosphorus signals were observed indicating slow conformational ring interconversion under specific conditions.
📜 SIMILAR VOLUMES
An inversion theorem is proved which places into a common setting and extends the work of Andrews, Gessel, Garsia, and Garsia and Remmel. Examples of \(q\)-Lagrange inversion are given, including new Rogers-Ramanujan type identities. (c) 1995 Academic Press. Inc.
Table 1. Substituted cycloheptatrienes from 2,4,6-cycloheptatriene-l-carbonitrile ( l ) , b. p. 78-80112 torr, which was prepared from tropylium tetrafluoroborate [a]. CPd.