Synthesis of deuterium-labelled estriol, 16.ALPHA.-hydroxyestrone and estriol 16-glucuronide via 2,4,16.ALPHA.-tribromoestrone as internal standards for mass fragmentography.
作者:MITSUTERU NUMAZAWA、MASAO NAGAOKA、MIEKO OGATA
DOI:10.1248/cpb.32.618
日期:——
Synthesis of 1, 3, 5 (10)-estratriene-3, 16α, 17β-triol-d6 and -d7 (4), 3, 16α-dihydroxy-1, 3, 5 (10)-estratrien-17-one-d5 (5) and sodium 3, 17β-dihydroxy-1, 3, 5 (10)-estratrien-16α-yl-β-D-glucopyranosuronate-d6 (8) is described. Treatment of 2, 4, 16α-tribromo-3-hydroxy-1, 3, 5 (10)-estratrien-17-one (1) with sodium hydroxide-OD in deuterium oxide-pyridine under controlled conditions gave the [16β-2H] 16α-hydroxy-17-one (2). The ketol 2 was converted into the triol-d6 (4) via sodium borodeuteride reduction in the presence of palladium chloride. Similar treatment of the 17-ethyleneacetal of 2 followed by acid hydrolysis gave compound 5-d5. Reaction of 2 with methyl 1-bromo-1-deoxy-2, 3, 4-tri-O-acetyl-α-D-glucopyranosuronate using silver carbonate as a catalyst yielded the 16-monoglucuronide acetate methyl ester (6). The reductive removal of the bromines of 6 and subsequent alkaline hydrolysis gave the glucuronide-d6 (8). Mass spectrometric analysis showed compounds 4, 5, and 8 to have good isotopic purity.
1, 3, 5 (10)-雌三烯-3, 16α, 17β-三醇-d6 和-d7 (4), 3, 16α-二羟基-1, 3, 5 (10)-雌三烯-17-一-的合成描述了 d5 (5) 和 3, 17β-二羟基-1, 3, 5 (10)-雌三烯-16α-基-β-D-吡喃葡萄糖醛酸钠-d6 (8)。在受控条件下,用氢氧化钠-OD在氧化氘-吡啶中处理2, 4, 16α-三溴-3-羟基-1, 3, 5 (10)-雌三烯-17-酮(1),得到[16β-2H ] 16α-羟基-17-酮(2)。在氯化钯存在下,通过硼氘化钠还原将酮醇 2 转化为三醇-d6 (4)。对2的17-乙缩醛进行类似处理,然后进行酸水解,得到化合物5-d5。使用碳酸银作为催化剂,2 与 1-溴-1-脱氧-2,3,4-三-O-乙酰基-α-D-吡喃葡萄糖醛酸甲酯反应,得到 16-单葡萄糖醛酸苷乙酸甲酯 (6)。还原除去 6 的溴并随后进行碱性水解,得到葡萄糖醛酸-d6 (8)。质谱分析表明化合物 4、5 和 8 具有良好的同位素纯度。