Magnetic circular dichroism and molecular orbital studies of isomeric azulenotropones
β Scribed by Akio Tajiri; Masahiko Fukuda; Masahiro Hatano; Masafumi Yasunami; Atsushi Takagi; Kahei Takase
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 312 KB
- Volume
- 108
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
111~ absorption and \lCI> qxctra of isomeric azulcncitropones UXTC mcasurcd to sbo\v that they csist in different structures in CI-~CO,II and CH3Oil. A semi-empirical LCAO SlO WI-Cl calculation revcalcd tbc clcctronir transitions cbaracteristic ol' the szulenotroponc skclcton and interpreted tbc spectral cbany of tbc isomers in CI'~CO~II and C113011.
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T h c magnetic circular dichroism spectra of a numbcr of indolc alkaloids show two B-tcrms of opposite sign in thc 250-330 nni wavelength region associated with the l L b and lL, clectronic transitions, thc long ivavelength, lLt,, band being of positive sign, whereas both bands strongly ovcrlap in a
## Abstract The 218βnm peak, characteristic of the circular dichroism of randomly coiled polyβΞ±βamino acids can be demonstrated in solutions of pentaβLβlysine, Ξ±βglycylβLβlysine, as well as polyβLβlysine. The thermal stability of the particular state that gives rise to this 218βnm band in the CD is
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