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Homologously pure methyl bacteriopheophorbides-e and f (BPhes-e/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...
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