Homoisoflavonoids and related compounds. II. Isolation and absolute configurations of 3,4-dihydroxylated homoisoflavans and brazilins from Caesalpinia sappan L.
作者:MICHIO NAMIKOSHI、HIROYUKI NAKATA、HIROYUKI YAMADA、MINAKO NAGAI、TAMOTSU SAITOH
DOI:10.1248/cpb.35.2761
日期:——
Three new phenolic compounds, 3'-Ο-methylsappanol, 3'-Ο-methylepisappanol and 3'-Ο-methylbrazilin, were isolated from Sappan Lignum, the dried heartwood of Caesalpinia sappan. The absolute configurations of sappanol, episappanol, 3'-deoxysappanol, 3'-Ο-methylsappanol, 3'-Ο-methylepisappanol, brazilin and 3'-Ο-methylbrazilin were determined by means of Horeau's partial resolution method and chemical correlations. Sappanol, episappanol, 3'-deoxysappanol, 3'-Ο-methylsappanol and 3'-Ο-methylepisappanol form a novel class of homoisoflavonoids.
从蓝花楹(Caesalpinia sappan)的干燥心材 Sappan Lignum 中分离出了三种新的酚类化合物,即 3'-Ο-methylsappanol 、3'-Ο-methylpyleisappanol 和 3'-Ο-methylbrazilin 。通过 Horeau 部分解析法和化学相关性测定了山梨醇、表山梨醇、3'-脱氧山梨醇、3'-Ο-甲基山梨醇、3'-Ο-甲基甲基山梨醇、巴西苷和 3'Ο-methylbrazilin 的绝对构型。萨帕醇、表萨帕醇、3'-脱氧萨帕醇、3'-Ο-甲基萨帕醇和 3'-Ο-methylepisappanol 形成了一类新的同异黄酮化合物。