Synthetic studies of azaflavonoids. II. Synthesis of 6-azaflavonoids.
作者:KATSUHIDE MATOBA、AKIKO FUKUSHIMA、HIROSHI ARAI、TAKAO YAMAZAKI
DOI:10.1248/cpb.27.242
日期:——
The syntheses of 5-hydroxyl-4'-methoxy-7-methyl-6-azaflavanone (Ia) and 5-hydroxy-4'-methoxy-7-methyl-6-azaflavone (IIa) from 4-hydroxy-6-methyl-2 (1H)-pyridone (IVa), and the syntheses of Ib and IIb, N-methyl analogues of Ia and IIa respectively, and of IIc, N-methyl-4'-demethoxy analogue of IIa, starting with N-methyl analogue (IVb) of IVa, were described.
描述了从4-羟基-6-甲基-2(1H)-吡啶酮(IVa)合成5-羟基-4'-甲氧基-7-甲基-6-氮杂黄烷酮(Ia)和5-羟基-4'-甲氧基-7-甲基-6-氮杂黄酮(IIa),以及从IVa的N-甲基类似物(IVb)合成Ia和IIa的N-甲基类似物Ib和IIb,以及IIa的N-甲基-4'-去甲氧基类似物IIc。