1α,25-dihydroxy-3-epi-vitamin D3 | 61476-45-7

• 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: 1α,25-dihydroxy-3-epi-vitamin D3
• 英文别名: (1S)-Calcitriol；(1S,3S,5Z)-5-[(2E)-2-[(1R,3aS,7aR)-1-[(2R)-6-hydroxy-6-methylheptan-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexane-1,3-diol
• CAS: 61476-45-7
• 化学式: C₂₇H₄₄O₃
• 分子量: 416.645
• InChiKey: GMRQFYUYWCNGIN-GNVXBELXSA-N

物化性质

• 沸点：
  565.0±50.0 °C(Predicted)
• 密度：
  1.06±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  30
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  60.7
• 氢给体数：
  3
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  1β,25-Dihydroxy-6,7-dehydro-3-epiprevitamin D₃ 在 Lindlar's catalyst 喹啉 、 sodium tetrahydroborate 、 氢气 、 戴斯-马丁氧化剂 作用下， 以 甲醇 、 正己烷 、 丙酮 、 乙腈 为溶剂， 反应 10.37h， 生成 1α,25-dihydroxy-3-epi-vitamin D3
  参考文献：
  名称：

  Studies of vitamin D (calciferol) and its analogs. 45. Studies on the A-ring diastereomers of 1.alpha.,25-dihydroxyvitamin D3

  摘要：

  The three A-ring diastereomers 3b (compound HL), 4a (compound HJ), and 4b (compound HH), of the steroid hormone 1alpha,25-dihydroxyvitamin D3 (1alpha,25-(OH)2-D3, 3a, compound C) have been synthesized and biologically evaluated. (R)-Carvone was converted in seven steps to the enantiomerically pure A-ring enyne 7a. Palladium-catalyzed cross-coupling of the latter with the CD-ring triflate 8 resulted in silyloxy dienyne 10, which was converted in three steps to 1beta,25-(OH)2-3-epi-D3 (4b). Oxidation of the latter with Dess-Martin reagent afforded trienone 6c, which upon reduction with sodium borohydride followed by thermolysis generated the 1alpha-epimer 4a. An identical sequence converted 1alpha,25-(OH)2-D3 to its 1beta-epimer 3b via trienone 5c. Reduction of the latter with sodium triacetoxyborohydride followed by thermal isomerization regenerated the hormone 3a. Relative competitive indices (RCls) of these analogues, which reflect their ability to bind to the chick intestinal nuclear receptor under in vitro conditions, were determined. Analogues 3b, 4a, and 4b had RCI values of 0.8 +/- 0.1 %, 24.0 +/- 4.5 %, and 0.22 +/- 0.01 %, respectively, in comparison to 1alpha,25-(OH)2-D3 whose value is 100% by definition. In addition, in vivo biological evaluation of these analogues was performed to determine their ability to induce intestinal calcium absorption (ICA) and bone calcium mobilization (BCM) in vitamin D deficient chicks. Analogue 4a was effective in stimulating ICA and BCM whereas analogues 3b and 4b exhibited little potency in eliciting these biological effects.

  DOI：

  10.1021/jo00059a048

文献信息

• A novel and practical route to A-ring enyne synthon for 1α,25-dihydroxyvitamin D3 analogs: Synthesis of A-ring diastereomers of 1α,25-dihydroxyvitamin D3 and 2-methyl-1,25-dihydroxyvitamin D3
  作者：Katsuhiro Konno、Shojiro Maki、Toshie Fujishima、Zhaopeng Liu、Daishiro Miura、Manabu Chokki、Hiroaki Takayama

  DOI：10.1016/s0960-894x(97)10204-9

  日期：1998.1

  A novel and practical route to the A-ring enyne synthon (2), which can be versatile for a variety of A-ring analogs of 1 alpha,25-dihydroxyvitamin D3 (1), was developed. This novel method led to an improved synthesis of the A-ring diastereomers of 1, the compounds 13-15, and synthesis of the new analogs, 2-methyl-1,25-dihydroxyvitamin D3 (4) with its all possible diastereomers. The biological evaluation

  开发了一种新颖而实用的通往A环烯炔合子（2）的途径，该途径可用于多种1α，25-二羟基维生素D3（1）的A环类似物。这种新方法改进了1的A环非对映异构体，化合物13-15的合成，以及新的类似物2-甲基-1,25-二羟基维生素D3（4）及其所有可能的非对映异构体的合成。对2-甲基类似物的生物学评估表明，α-α-β-异构体的效力比1。
• Efficient synthesis and biological evaluation of all a-ring diastereomers of 1α,25-dihydroxyvitamin D3 and its 20-epimer
  作者：Toshie Fujishima、Katsuhiro Konno、Kimie Nakagawa、Mayuko Kurobe、Toshio Okano、Hiroaki Takayama

  DOI：10.1016/s0968-0896(99)00262-x

  日期：2000.1

  An improved synthesis of the diastereomers of 1alpha,25-dihydroxyvitamin D3 (1) was accomplished utilizing our practical route to the A-ring synthon. We applied this procedure to synthesize for the first time all possible A-ring diastereomers of 20-epi-1alpha,25-dihydroxyvitamin D3 (2). Ten-step conversion of 1-(4-methoxyphenoxy)but-3-ene (6), including enantiomeric introduction of the C-3 hydroxyl

  利用我们通往A环合成子的实用途径，完成了1α，25-二羟基维生素D3（1）非对映异构体的合成。我们应用此程序首次合成了20-epi-1alpha，25-dihydroxyvitamin D3（2）的所有可能的A环非对映异构体。1-（4-甲氧基苯氧基）丁-3-烯（6）的十步转化，包括通过Sharpless不对称二羟基化将C-3羟基对映体引入烯烃，提供了A环烯炔的所有四种可能的立体异构体（3）。即（3R，5R）-，（3R，5S）-，（3S，5R）-和（3S，5S）-双[（叔丁基二甲基甲硅烷基）氧基] oct-1-en-7-yne总产量。钯催化的A环合成子与20-epi CD环部分的交叉偶联（5），（E）-（20S）-de-A，B-8-（溴亚甲基）胆甾醇25-ol，然后解除保护，提供了必需的20-epi-1alpha，25-二羟基维生素D3非对映异构体（2）。根据对维生素D受体（VDR）和维生素
• Versatile and Functionalised Intermediates for the Synthesis of Vitamin D and Novel Vitamin D Derivatives
  申请人：ENDOTHERM GMBH

  公开号：US20150344421A1

  公开（公告）日：2015-12-03

  Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.

  提供了用于完全合成维生素D的新型中间体，这些中间体允许在最终维生素衍生物中具有极大的功能性基团多样性。提供了在3号位置外消旋的维生素衍生物和在18号位置具有广泛功能性的维生素衍生物，包括具有同位素标记的化合物。
• New Convergent Synthesis of 1α,25-Dihydroxyvitamin D₃ and Its Analogues by Suzuki−Miyaura Coupling between A-Ring and C,D-Ring Parts
  作者：Takeshi Hanazawa、Akiko Koyama、Kunio Nakata、Sentaro Okamoto、Fumie Sato

  DOI：10.1021/jo0353435

  日期：2003.12.1

  A new convergent method for the synthesis of 1alpha,25-dihydroxyvitamin D-3 and its analogues has been developed that involves efficient preparation of the A-ring part la, (Z)-(3S,5R)-1-bromomethylene-3,5-bis(tert-butyldimethylsilyloxy)-2-methylenecyclohexane, starting from epichlorohydrin (4) and its Suzuki-Miyaura coupling reaction with the C,D-ring part 12. Thus, (R)-4 was converted to (3S,5R)-5-(tert-butyldimethylsilyloxy)-8-(trimethylsilyl)-oct-1-en-7-yn-3-ol (3a) through a ten-step reaction sequence in 49% overall yield. Compound 3a thus obtained was treated with a Ti(O-i-Pr)(4)/2 i-PrMgCl reagent and then with NBS to afford (Z)-(1S,2S,5R)-2-bromomethyl-3-[bromo(trimethylsilyl)methylene]-5-(tert-butyldimethylsilyloxy)cyclohexanol (10a) in 51% yield, from which la was obtained in 87% yield by sequential treatment with TBSCl/imidazole, DBU, and Cs2CO3. The resulting A-ring intermediate la was reacted with alkenylboronate 12 in the presence of a PdCl2(dppf) catalyst to furnish 1alpha,25-dihydroxyvitamin D-3 in 82% yield after protodesilylation. Similarly, all of the other three possible stereoisomers of A-ring parts 1b, 1c, and 1d were prepared, from which 1-epi-, 3-epi-, and 1,3-di-epi-1alpha,25-dihydroxyvitamin D-3 were synthesized by coupling with 12 in excellent yield, respectively. Starting from la and 1c, des-C,D-I(x,25-dihydroxyvitamin D-3 analogues, retiferol 13 and its 3-epi derivative, were also prepared, respectively.
• US9994508B2
  申请人：——

  公开号：US9994508B2

  公开（公告）日：2018-06-12