The stereochemistry of glabrescol
β Scribed by Benjamin R Bellenie; Jonathan M Goodman
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- French
- Weight
- 113 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
The structure of glabrescol has been proposed and revised. Could the revised structure have been predicted without the need for total synthesis? Molecular modelling studies showed that the natural product structure proposed for glabrescol was not the most thermodynamically favourable form. When a lithium ion was incorporated, the natural product proved to be the lowest in energy of all symmetric isomers of glabrescol. Further modelling studies have led to the discovery of an asymmetric isomer lower in energy than the natural product when bound to a variety of ions.
π SIMILAR VOLUMES
of 2. a) Ac 2 O, Et 3 N; b) HCl; c) MsCl, Et 3 N; d) DI-BAH; e) NaH; f) n-Bu 4 NF.
thin-layer plates, removal of the spots and extraction of the silica gel with methanol containing 5 % of concentrated ammonia solution are recommended. After excitation with the 365 mu Hg line, the intensity of fluorescence of the extract is determined at 520 mp for DANS-amides and at 530 m p for ph
Scientists from academia and industry once again convened at BΓΌrgenstock, above Lake Lucerne (Switzerland), for the 41st EUCHEM Conference on Stereochemistry, chaired by Bernhard KrΓ€utler (University of Innsbruck, Austria). According to a long tradition the program of the conference was not disclose