Synthesis of homologously pure bacteriochlorophyll-e and f analogues from BChls-c/d via transformation of the 7-methyl to formyl group and self-aggregation of synthetic zinc methyl bacteriopheophorbides-c/d/e/f in non-polar organic solvent
摘要:
Homologously pure methyl bacteriopheophorbides-e and f (BPhes-a/f(M)) were prepared from modification of naturally occurring bacteriochlorophylls-c and d (BChls-c/d), respectively, by transformation of the methyl to formyl group at the 7-position. The absolute configuration of the 1-hydroxyethyl group at the 3-position of (Zn-)BPhes-e/f(M) was determined from comparison with structurally known BChl-c/d epimers. Visible spectra of synthetic (Zn-)BPhe-c/d/e/f(M) showed that the 7(1)-oxidation and the 8(2)/12(1)/20-methylation affected Soret, Q(x) and Q(y) bands of both the monomeric (in a polar organic solvent) and oligomeric species (in a non-polar solvent). (C) 2003 Elsevier Science Ltd. All rights reserved.
Risch, Nikolaus; Koester, Bettina; Schormann, Anette, Liebigs Annalen der Chemie, 1988, p. 343 - 348
作者:Risch, Nikolaus、Koester, Bettina、Schormann, Anette、Siemens, Thomas、Brockmann, Hans
DOI:——
日期:——
A novel approach toward bacteriochlorophylls-e and f
作者:Hitoshi Tamiaki、Miki Omoda、Masanobu Kubo
DOI:10.1016/s0960-894x(99)00258-9
日期:1999.6
Methyl bacteriopheophorbide-f was prepared from methyl bacteriopheophorbide-d with retention of the 3(1)-chirality. The transformation of the methyl to the formyl group at the 7-position of the chlorin moiety will provide an alternative route for the synthesis of bacteriochlorophylls-e and f. (C) 1999 Elsevier Science Ltd. Ail rights reserved.