The chiroptical properties of the strychnine alkaloids: strychnine, β-colubrine, brucine, and their dihydro derivatives

Ultraviolet absorption and circular dichroism spectra of the strychnine alkaloids strychnine, β-colubrine, brucine, dihydrostrychnine, dihydro-β-colubrine, and dihydrobrucine have been investigated under various experimental conditions. It appears that at least five electronic transitions are requir...

Full description

Saved in:
Bibliographic Details
Published in:Canadian journal of chemistry 1978-05, Vol.56 (9), p.1222-1230
Main Authors: Show, Julian W, Hooker Jr, Thomas M
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ultraviolet absorption and circular dichroism spectra of the strychnine alkaloids strychnine, β-colubrine, brucine, dihydrostrychnine, dihydro-β-colubrine, and dihydrobrucine have been investigated under various experimental conditions. It appears that at least five electronic transitions are required to account for the spectroscopic properties of these molecules in the ultraviolet region above 190 nm. Transitions, which are tentatively assigned as the 1 L b , 1 L a , 1 B b , and 1 B a in the notation due to Platt, and an n → π* transition apparently make significant contributions to the spectra of ail of the molecules studied.
ISSN:0008-4042
1480-3291
DOI:10.1139/v78-203