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- Title
Determination of N‐centered stereochemistry in N22‐methylated chlorophyll‐a derivatives and their epimer‐dependent optical spectra.
- Authors
Ataka, Riko; Taniguchi, Tohru; Monde, Kenji; Tamiaki, Hitoshi
- Abstract
An N‐centered epimeric mixture of chlorophyll‐a derivatives methylated at the inner nitrogen atom was separated by reverse‐phase high‐performance liquid chromatography. Circular dichroism (CD) spectroscopic analyses of the epimerically pure N22‐methyl‐chlorins revealed that the minor first‐eluted and major second‐eluted stereoisomers were (22S)‐ and (22R)‐configurations, respectively. Their visible absorption and CD spectra in solution were dependent on the N22‐stereochemistry. The epimer‐dependent spectral changes were independent of the substituents at the peripheral 3‐position of the core chlorin chromophore.
- Subjects
STEREOCHEMISTRY; OPTICAL spectra; HIGH performance liquid chromatography; CIRCULAR dichroism; ABSORPTION spectra; CHLOROPHYLL
- Publication
Chirality, 2024, Vol 36, Issue 6, p1
- ISSN
0899-0042
- Publication type
Article
- DOI
10.1002/chir.23681