Synthetic Studies of Vitamin D Analogs. XXII. Synthesis and Antiproliferation Activity of Putative Metabolites of 1.ALPHA.,25-Dihydroxy-22-oxavitamin D3.
作者:Hiroyoshi WATANABE、Susumi HATAKEYAMA、Kazuki TAZUMI、Seiichi TAKANO、Sonoko MASUDA、Toshio OKANO、Tadashi KOBAYASHI、Noboru KUBODERA
DOI:10.1248/cpb.44.2280
日期:——
As putative metabolites of 1 alpha,25-dihydroxy-22-oxavitamin D3 (OCT), 24-hydroxylated OCT in 24(R) and 24(S) forms, 24-ketoOCT, 26-hydroxylated OCT in 25(S) and 25(R) forms, pentanorOCT and pentanor-ketoOCT were synthesized from the steroidal 20(S)-alcohol. Their antiproliferation activities towards human promyelocytic leukemia cells (HL-60 cells) are also reported. Oxidized derivatives at the C-24
作为1 alpha,25-dihydroxy-22-oxavitamin D3(OCT)的推定代谢产物,以24(R)和24(S)形式形成24-羟基OCT,以25(S)和25形式形成24-ketoOCT,26-羟基OCT。 (R)形式的pentanorOCT和pentanor-ketoOCT由甾族20(S)-醇合成。还报道了它们对人早幼粒细胞白血病细胞(HL-60细胞)的抗增殖活性。C-24位的氧化衍生物,24-酮基OCT,24(R)-羟基化的OCT和24(S)-羟基化的OCT,其活性与OCT相当或略弱,而26-羟基化的OCT的活性却比OCT弱10月。在10(-7)-10(-10)M时,截短的OCT,pentanor OCT和pentanor-ketoOCT无效。