L. Ling et Jw. Lown, ENZYMATIC PREPARATION OF OPTICALLY-ACTIVE PRECURSORS OF CPI, THE DNA ALKYLATION SUBUNIT OF THE NATURALLY-OCCURRING ANTITUMOR ANTIBIOTIC CC-1065, Chemical communications, (13), 1996, pp. 1559-1560
Some immediate precursors of CPI, the DNA alkylation subunit of CC-106
5 are subjected to enzymatic resolution with Lipase PS in vinyl acetat
e; racemic 3 is effectively resolved by two consecutive enzymatic reac
tions.