First Total Synthesis of N-4909 and Its Diastereomer; A Stimulant of Apolipoprotein E Secretion in Human Hepatoma Hep G2 Cells.
作者:MAKOTO YANAI、SHIGERU HIRAMOTO
DOI:10.7164/antibiotics.52.150
日期:——
Both (R)- and (S)-3-hydroxy-13-methyltetradecanoic acids were prepared via a lipase-catalyzed enantioselective acylation. The total synthesis of N-4909 and its diastereomer were achieved by a coupling of either (R)- or (S)-3-hydroxy-13-methyltetradecanoic acid moiety with a hexapeptide moiety and by a cyclization with HATU (O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate)
(R)-和(S)-3-羟基-13-甲基十四烷酸均通过脂肪酶催化的对映选择性酰化制备。N-4909及其非对映异构体的总合成是通过(R)-或(S)-3-羟基-13-甲基十四烷酸部分与六肽部分偶联并通过HATU(O-(7 -高氮条件下的(-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate)和HOAt(1-hydroxy-7-azabenzotriazole)。发现3-羟基-13-甲基十四烷酸的R构型对于刺激人肝癌Hep G2细胞中载脂蛋白E分泌的活性很重要。