啤酒花的黄酮类成分(2)
化合物2 无色针状结晶(甲醇)。ESI,MS m/z 273[M+H]+。1H,NMR(DMSO-d6,600 MHz) δ:5.48(1H,dd,J=12.6,2.6 Hz,H,2),2.72(1H,dd,J=16.8,2.6 Hz,H,3a),3.30(1H,dd,J=16.8,12.6 Hz,H,3b),5.90(1H,d,J=2.0 Hz,H,6),5.85(1H,d,J=2.0 Hz,H,8),7.35(2H,d,J=8.6 Hz,H,2′,6′),6.81(2H,d,J=8.6 Hz,H,3′,5′),12.52(1H,s,5,OH);13C,NMR(DMSO-d6,150 MHz) δ:78.8(C,2),42.4(C,3),196.8(C,4),163.9(C ......
您现在查看是摘要页,全文长 3458 字符。