Study on the Bile Salts from Sunfish, Mola mola L. I. The Structures of Sodium Cyprinol Sulfates, the Sodium Salt of a New Bile Acid Conjugated with Taurine, and a New Bile Alcohol and Its New Sodium Sulfates.
作者:Hitoshi ISHIDA、Hidetoshi NAKAYASU、Hidekazu MIYAMOTO、Haruo NUKAYA、Kuniro TSUJI
DOI:10.1248/cpb.46.12
日期:——
New sodium bile alcohol sulfates (1a and 1b), two sodium cyprinol sulfates (2a and 2b), and the sodium salt of a new bile acid conjugated with taurine (3) were isolated from the bile of sunfish, Mola mola L., by chromatography on silica gel and octadecylsilane (ODS), together with sodium taurocholate (4). On hydrolysis with pyridine and dioxane, the new sulfates 1a and 1b both afforded a new bile alcohol (5), whose structure was determined to be 5β-cholestane-3α, 7, α11α, 26, 27-pentol, based on the physico-chemical data. On the basis of this result and their physiochemical data, the new sulfates were established as (25S)- and (25R)-(+)-3α, 7α, 11α, 26-tetrahydroxy-5β-cholestan-27-yl sodium sulfate. Based on the physicochemical data and chemical transformations, the sodium cyprinol sulfates were identified as (25S)- and (25R)-(+)-3α, 7α, 12α, 26-tetrahydroxy-5β-cholestan-27-yl sodium sulfate and compound 3 as sodium 2-[[3α, 7α, 11α-trihydroxy-24-oxo-5β-cholan-24-yl]amino]ethanesulfonate.
通过在硅胶和十八烷基硅烷(ODS)上进行层析,从太阳鱼胆汁中分离出了新的胆汁醇硫酸钠(1a 和 1b)、两种氰醇硫酸钠(2a 和 2b)以及一种与牛磺酸共轭的新胆汁酸钠盐(3),同时还分离出了牛磺胆酸钠(4)。在用吡啶和二氧六环进行水解时,新的硫酸盐 1a 和 1b 都生成了一种新的胆汁醇(5),根据物理化学数据,确定其结构为 5β-cholestane-3α, 7, α11α, 26, 27-戊醇。根据这一结果及其理化数据,新的硫酸盐被确定为 (25S)-和 (25R)-(+)-3α, 7α, 11α, 26-四羟基-5β-胆甾烷-27-基硫酸钠。根据理化数据和化学转化,确定氰基苯酚硫酸钠盐为 (25S)- 和 (25R)-(+)-3α, 7α, 12α, 26-四羟基-5β-胆甾烷-27-基硫酸钠盐,化合物 3 为 2-[[3α, 7α, 11α- 三羟基-24-氧代-5β-胆甾烷-24-基]氨基]乙磺酸钠盐。