(3β,20S)-3-<(tert-butyldimethylsilyl)oxy>pregn-5-ene-20-carboxylic acidmethyl ester | 69454-87-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: (3β,20S)-3-<(tert-butyldimethylsilyl)oxy>pregn-5-ene-20-carboxylic acidmethyl ester
• 英文别名: methyl (2S)-2-[(3S,8S,9S,10R,13S,14S,17R)-3-[tert-butyl(dimethyl)silyl]oxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]propanoate
• CAS: 69454-87-1
• 化学式: C₂₉H₅₀O₃Si
• 分子量: 474.8
• InChiKey: QLFFKMXMXNBBBE-YATFVDHGSA-N

物化性质

• 沸点：
  494.5±28.0 °C(Predicted)
• 密度：
  1.00±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.76
• 重原子数：
  33
• 可旋转键数：
  6
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (3β,20S)-3-<(tert-butyldimethylsilyl)oxy>pregn-5-ene-20-carboxylic acidmethyl ester 在 lithium aluminium tetrahydride 、 三乙胺 、 sodium iodide 作用下， 以 四氢呋喃 、 二氯甲烷 、 丙酮 为溶剂， 生成 tert-Butyl-[(3S,8S,9S,10R,13S,14S,17R)-17-((S)-2-iodo-1-methyl-ethyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yloxy]-dimethyl-silane
  参考文献：
  名称：

  氮芥子气甾体甾体前体药物的合成，通过重构的低密度脂蛋白（LDL）进行抗肿瘤靶向

  摘要：

  从市售的胆酸中合成Bis和tris氮芥芥菜油基固醇氨基甲酸酯，以通过LDL途径靶向抗肿瘤药物。三-氮芥是通过从叔丁基3-（二乙基丙二酰） -丙酸酯的二价阴离子的选择性烷基化制成的三酯中间体制备10与类固醇碘化物8。

  DOI：

  10.1016/s0040-4039(00)60717-7
• 作为产物：
  描述：

  hydroxybisnorcholenic acid 生成 (3β,20S)-3-<(tert-butyldimethylsilyl)oxy>pregn-5-ene-20-carboxylic acidmethyl ester
  参考文献：
  名称：

  维生素D C-22醛。合成侧链修饰的维生素D类似物的新关键中间体

  摘要：

  维生素D C-22醛和1α-羟基维生素D C-22醛是从容易获得的22,23-双降胆固醇酸开始有效合成的。已经证明了该化合物作为合成维生素D 2和D 3的侧链修饰的类似物的通用中间体的有用性。

  DOI：

  10.1016/s0040-4039(00)61826-9

文献信息

• Novel convergent synthesis of side-chain-modified analogs of 1.alpha.,25-dihydroxycholecalciferol and 1.alpha.,25-dihydroxyergocalciferol
  作者：Andrzej Kutner、Kato L. Perlman、Amparo Lago、Heinrich K. Schnoes、H. F. DeLuca、Rafal R. Sicinski

  DOI：10.1021/jo00250a009

  日期：1988.7
• Chemical synthesis of 3β-sulfooxy-7β-hydroxy-24-nor-5-cholenoic acid: An internal standard for mass spectrometric analysis of the abnormal Δ5-bile acids occurring in Niemann-Pick disease
  作者：Genta Kakiyama、Akina Muto、Miki Shimada、Nariyasu Mano、Junichi Goto、Alan F. Hofmann、Takashi Iida

  DOI：10.1016/j.steroids.2009.04.007

  日期：2009.9

  In Niemann-Pick disease, type C1, increased amounts of 3 beta,7 beta-dihydroxy-5-cholenoic acid are reported to be present in urinary bile acids. The compound occurs as a tri-conjugate, sulfated at C-3, N-acetylglucosamidated at C-7, and N-acylamidated with taurine or glycine at C-24. For sensitive LC-MS/MS analysis of this bile acid, a suitable internal standard is needed. We report here the synthesis of a satisfactory internal standard, 3 beta-sulfooxy-7 beta-hydroxy-24-nor-5-cholenoic acid (as the disodium salt). The key reactions involved were (1) the so-called "second order" Beckmann rearrangement (one-carbon degradation at C-24) of hyodeoxycholic acid (HDCA) 3,6-diformate with sodium nitrite in a mixture of trifluoroacetic anhydride and trifluoroacetic acid, (2) simultaneous inversion at C-3 and elimination at C-6 of the ditosylate derivatives of the resulting 3 alpha,6 alpha-dihydroxy-24-nor-5 beta-cholanoic acid with potassium acetate in aqueous N,N-dimethylformamide, and (3) regioselective sulfation at C-3 of an intermediary 3 beta,7 beta-dihydroxy-24-nor-Delta(5) derivative using sulfur trioxide-trimethylamine complex. Overall yield of the desired compound was 1.8% in 12 steps from HDCA. (C) 2009 Elsevier Inc. All rights reserved.
• Synthesis, specificity, and antifungal activity of inhibitors of the Candida albicans .DELTA.24-sterol methyltransferase
  作者：Mark A. Ator、Stanley J. Schmidt、Jerry L. Adams、Roland E. Dolle、Lawrence I. Kruse、Carrie L. Frey、Janice M. Barone

  DOI：10.1021/jm00079a012

  日期：1992.1

  A series of side chain modified analogues of cholesterol and lanosterol (1-10) have been synthesized and evaluated as inhibitors of the Candida albicans DELTA-24-sterol methyltransferase. Two sterol substrate analogues 1 and 2 which contained a 24-thia substituent were relatively modest inhibitors of the enzyme (K(i) = 1.5-72-mu-M). Compounds which mimic the carbocation intermediates proposed for the methyltransferase reaction, including sulfonium salts 4-6, amidines 7 and 8, and imidazoles 9 and 10 were substantially more potent inhibitors (K(i) = 5-500 nM). All of the sterol analogues examined displayed less than 10-fold selectivity for inhibition of the methyltransferase versus the rat liver DELTA-24-sterol reductase. The sterol analogues were tested for in vitro antifungal activity against C. albicans, Candida tropicalis, and Torulopsis glabrata. The minimum inhibitory concentrations versus C. albicans correlated well with the K(i) values for methyltransferase inhibition, and the potency of several compounds approached that of amphotericin B, although only modest fungicidal activity was observed.
• Regulation of liver X receptor target genes by 22-functionalized oxysterols. Synthesis, in silico and in vitro evaluations
  作者：Elvar Örn Viktorsson、Mari Gabrielsen、Nugalya Kumarachandran、Ingebrigt Sylte、Pål Rongved、Ove Alexander Høgmoen Åstrand、Eili Tranheim Kase

  DOI：10.1016/j.steroids.2016.12.003

  日期：2017.2

  The endogenous oxysterol 22(R)-hydroxycholesterol (22RHC, 1) is an LXR agonist which upregulates genes of critical involvement in human cholesterol- and lipid metabolism. In contrast, its synthetic epimer 22(S)-hydroxycholesterol (22SHC, 8) has shown specific antagonistic effects in recent studies, avoiding unwanted side effects provided by potent LXR agonists. In terms of LXR modulation, the aim of this study was to compare 22SHC (8), 22RHC (1) and synthesized ligands with keto- and amide functionality in the 22nd position of the cholesterol scaffold. 22SHC (8) and 22RHC (1) performed as expected while 22-ketocholesterol (22KC, 10) revealed an attractive in vitro profile for further investigation in terms of anti-atherosclerotic properties as selective upregulation of the ATP-binding cassette transporter ABCA1 was observed. A new synthesized amide derivate, Fernholtz cyclohexylamide (13) was shown to reduce lipogenesis in a dose-responsive manner and abolish the effect of the potent LXR agonist T0901317 when administered simultaneously. (C) 2016 Elsevier Inc. All rights reserved.
• Synthesis and biological evaluation of desmethylveramiline, a micromolar Hedgehog inhibitor
  作者：Guillaume Guerlet、Thomas Spangenberg、André Mann、Hélène Faure、Martial Ruat

  DOI：10.1016/j.bmcl.2011.04.103

  日期：2011.6

  Desmethylveramiline (1), an aza steroid analogue of veramiline was designed as a surrogate for cyclopamine, a reference antagonist of the Sonic Hedgehog (Shh) pathway. Desmethyveramiline (1) was prepared in seven steps from commercially available Fernholtz acid using the hydroformylation of a terminal olefine as the key step for the construction of the piperidine appendage. In two assays (i) the inhibition of the Shh-induced Gli-dependent luciferase activity in Shh-light2 cells, (ii) the inhibition of the SAG-induced differentiation of the mesenchymal C3H10T1/2cells, desmethylveramiline (1) is an inhibitor in the mu M range comparable to cyclopamine. (C) 2011 Elsevier Ltd. All rights reserved.