[结构式][主要物性]分子式C26H34O11;分子量522.21。白色粉末,熔点203~204℃。UVλCH3OHmaxnm(lgε):216.8(2.02),283.2(0.32)。IRνmaxKBrcm-1:3464,2903,2850,1600,1509,1459,1430,1379,1323,1200,1159,1119,1093,1054,1037,1007,885,871,773。MSm/z:522(M+),391(aglycone+H)+。[供试品]及[含 (共 264 字) [阅读本文] >>