Inhibition of Na<sup>+</sup>,K<sup>+</sup>-ATPase Activity by (-)-<i>ent</i>-Kaur-16-en-19-oic Acid and its Derivatives
作者:Ngamrojnavanich, Nattaya、Sirimongkon, Supaporn、Roengsumran, Sophon、Petsom, Amorn、Kamimura, Hishashi
DOI:10.1055/s-2003-40636
日期:2003.6
The diterpene, (-)- ent-kaur-16-en-19-oic acid, from Croton oblongifolius was identified as an Na +,K +-ATPase inhibitor. This compound exhibits an IC 50 of 2.2 x 10( -5 )M against crude enzyme Na +,K +-ATPase from rat brain. The semi-synthetic derivatives, (-)-methyl kaur-16-en-19-oate, (-)-kaur-16-en-19-ol, (-)-16beta,17-epoxykauran-19-oic acid and (-)-17-hydroxykaur-15-en-19-oic acid were also tested
来自Croton oblongifolius的二萜,(-)-ent-kaur-16-en-19-oic酸被鉴定为Na +,K + -ATPase抑制剂。该化合物对大鼠脑中的粗酶Na +,K + -ATPase的IC 50为2.2 x 10(-5)M。半合成衍生物(-)-甲基kaur-16-en-19-oate,(-)kaur-16-en-19-ol,(-)-16beta,17-epoxykauran-19-oic acid和还测试了(-)-17-hydroxykaur-15-en-19-oic acid,其IC 50为5.5 x 10(-4),5.0 x 10(-4),4.8 x 10(-4)和6.0 x 10(-4)M。