prov:value
| - (e) reacting the ketolactone with an ortho-amino carbonyl compound having the formula ##STR4## wherein n=1 or 2; R2 is a member selected from the group consisting of cyano, methylenedioxy, formyl, hydroxy, C1-8 alkoxy, nitro, amino, amido, chloro, bromo, iodo, fluoro, C1-8 alkyl, trifluoromethyl, aminomethyl, azido, and hydrazino groups; R3 is H or C1-8 alkyl; and R4 is a side-chain of one of the
|