Syntheses of 2-hydroxy-4,7-dimethoxy-2H-1,4-benzoxazin-3(4H)-one: A precursor of a bioactive electrophile from Gramineae
作者:Carlos A. Escobar、Michael Kluge、Dieter Sicker
DOI:10.1016/s0040-4039(96)02492-6
日期:1997.2
2-Hydroxy-4,7-dimethoxy-2H-1,4-benzoxazin-3(4H)-one (8), the hitherto undescribed free hemiacetalic aglycone of a benzoxazinoid acetal glucoside naturally occurring in wheat, has been synthesized following two pathways, independently. This cyclic hydroxamic acid methyl ester proved to be very unstable when in solution. This gives rise to the assumption that HDIBOA naturally released from its acetal
已经合成了2-羟基-4,7-二甲氧基-2 H -1,4-苯并恶嗪-3(4 H)-one(8),这是小麦中天然存在的迄今未描述的苯并恶嗪样缩醛糖苷的游离半缩醛糖苷。两条途径,独立。证明该环状异羟肟酸甲酯在溶液中时非常不稳定。这引起这样的假设,即从其乙缩醛葡糖苷天然释放的HDIBOA是通过甲醇盐消除而形成多中心亲电试剂的前体,该亲电试剂最近被报道是苯并恶嗪样铅的生物活性成分。