pirobenzofuran-3(2H)-one, the first spiropeltogynoid, is related to the concomitant crombeone (8-hydroxypeltogynone) from which it is derived via oxidation with alkaline hydrogen peroxide of the chalcone intermediate. The method of synthesis and i.r. spectroscopy define the stereochemistry as either 2(3′)R,4′R or 2(3′)S,4′S. Crombenin is accompanied by the first natural 5,6-dihydroxyphthalide.
Crombenin,4,4',6,6',7- pentahydroxyisochroman -3'- spirobenzofuran-3(2 ħ) -酮,第一spiropeltogynoid,是关系到伴随crombeone(8- hydroxypeltogynone)从其衍生自通过
查尔酮中间体用碱性
过氧化氢氧化。合成和红外光谱法将立体
化学定义为2(3')R,4'R或2(3')S,4 'S。crombenin伴随着第一个天然的5,6-二羟基
邻苯二酚。