摘要:
采用硅胶、ODS和凝胶等柱色谱方法对苦木(
Picrasma quassioides Bennet)干燥茎的化学成分进行分离纯化,通过NMR、MS等波谱技术鉴定了17个化合物,包括6个
β-咔巴啉类生物碱:1-methoxycarbonyl-
β-carboline(
1 ),1-carbamoyl-
β-carbolin(
2 ),4-methoxy-
β-carboline-1-carboxylic acid methyl ester(
3 ),1-ethoxycarbonyl-
β-carboline(
4 ),1-ethyl-
β-carboline(
5 ),cordysinin C(
6 ),5个铁屎米-6-酮类生物碱:4,5-dimethoxycanthin-6-one(
7 ),11-hydroxycanthin-6-one(
8 ),5-hydroxycanthin-6-one(
9 ),5-hydroxy-4-methoxycanthin-6-one(
10 ),canthin-6-one(
11 );2个铁屎米-5,6-二酮类生物碱:3-methyl-4-methyoxycanthin-5,6-dione(
12 ),3-methylcanthin-5,6-dione(
13 );3个倍半萜类化合物:10α-hydroxycadin-4-en-al(
14 ),canangaterpenes III(
15 ),15-oxo-T-cadinol(
16 ),1个甾体类化合物androsta-1,4-diene-3,17-dione(
17 )。其中化合物
16 为新的天然产物,化合物
5 、
6 和
14 ~
17 为首次从苦木中分离鉴定。