Department of Biotechnology, National Formosa University, Yunlin 632, Taiwan, Republic of China.
J Nat Prod. 2013 Feb 22;76(2):230-6. doi: 10.1021/np300699f. Epub 2013 Jan 24.
Phytochemical investigation of the methanolic extract of Croton tonkinensis afforded two known kauranes (1, 2), eight new ent-kauranes (3-10), and 16 known ent-kaurane-type diterpenoids (12-27). In addition, 30 known compounds were identified by comparison of their physical and spectroscopic data with reported data. Among the isolated compounds, ent-18-acetoxykaur-16-en-15-one (20) displayed the most significant inhibition of superoxide anion generation and elastase release.
从越南巴豆的甲醇提取物中分离得到了两个已知的贝壳杉烷(1、2),八个新的贝壳杉烷(3-10),以及 16 个已知的贝壳杉烷型二萜(12-27)。此外,通过比较其物理和光谱数据与报道的数据,鉴定了 30 个已知化合物。在所分离的化合物中,ent-18-乙酰氧基贝壳杉-16-烯-15-酮(20)对超氧阴离子生成和弹性蛋白酶释放的抑制作用最为显著。