Acetylation of Camptothecins Using Lithium Bromide as Catalyst
摘要:
Camptothecin and 9-Methoxycamptothecin, two promising naturally occurring anticancer alkaloids containing a tertiary hydroxy group, were acetylated with acetic anhydride at room temperature in the presence of lithium bromide as catalyst. The similar method was followed for acetylation of other two related natural alkaloids, mappicine and 9-methoxymappicine.