Partial syntheses of two 8-vinyl-derivatives (3 and 6) of chlorin-e(6)
trimethyl ester 5 are reported; in certain organisms, 8-de-ethyl-8-vi
nylchlorophyll-a 3 has been proposed to be a biosynthetic precursor of
the plant chlorophylls and of the bacteriochlorophylls. Copyright (C)
1996 Elsevier Science Ltd