1
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Liu C, Zhao GD, Mao X, Suenaga T, Fujishima T, Zhang CM, Liu ZP. Synthesis and biological evaluation of 1α,25-dihydroxyvitamin D3 analogues with aromatic side chains attached at C-17. Eur J Med Chem 2014; 85:569-75. [DOI: 10.1016/j.ejmech.2014.08.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 08/08/2014] [Accepted: 08/08/2014] [Indexed: 01/30/2023]
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2
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Chen B, Kawai M, Wu-Wong JR. Synthesis of VS-105: A novel and potent vitamin D receptor agonist with reduced hypercalcemic effects. Bioorg Med Chem Lett 2013; 23:5949-52. [PMID: 24035340 DOI: 10.1016/j.bmcl.2013.08.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 12/28/2022]
Abstract
We have synthesized a novel vitamin D receptor agonist VS-105 ((1R,3R)-5-((E)-2-((3αS,7αS)-1-((R)-1-((S)-3-hydroxy-2,3-dimethylbutoxy)ethyl)-7α-methyldihydro-1H-inden-4(2H,5H,6H,7H,7αH)-ylidene)ethylidene)-2-methylenecyclohexane-1,3-diol). Preparation of a-ring phenylphosphine oxide 11, followed by Wittig-Horner coupling of 11 with the protected 25-hydroxy Grundmann's ketone 22 generated the precursor 12. Deprotection of the TBDMS groups of 12 produced the target compound VS-105. The biological profiles of VS-105 were evaluated using in vitro assays (VDR receptor binding, VDR reporter gene and HL-60 differentiation) in comparison to calcitriol (the endogenous hormone) or paricalcitol. Furthermore, the PTH suppressing potency and hypercalcemic side effects of VS-105 were evaluated in the 5/6 nephrectomized uremic rats in comparison to paricalcitol. Combining various changes at 20-epi, 22-oxa, 24-methyl, and 2-methylene yielded VS-105 that not only is highly potent in inducing functional responses in vitro, but also effectively suppresses PTH in a dose range that does not affect serum calcium in the 5/6 nephrectomized uremic rats.
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Affiliation(s)
- Barbara Chen
- Vidasym, 2201 W. Campbell Park Dr., Suite 13, Chicago, IL 60612, United States
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3
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Yasuda K, Ikushiro S, Kamakura M, Takano M, Saito N, Kittaka A, Chen TC, Ohta M, Sakaki T. Human cytochrome P450-dependent differential metabolism among three 2α-substituted-1α,25-dihydroxyvitamin D(3) analogs. J Steroid Biochem Mol Biol 2013; 133:84-92. [PMID: 22982757 DOI: 10.1016/j.jsbmb.2012.09.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 09/05/2012] [Accepted: 09/07/2012] [Indexed: 11/27/2022]
Abstract
Our previous studies revealed that C2α-substituted-1α,25(OH)(2)D(3) analogs had unique biological activities. For example, 19-nor-2α-(3-hydroxypropyl)-1α,25(OH)(2)D(3) (MART-10), which has a high affinity for vitamin D receptor (VDR), is more bioavailable and more potent than 1α,25(OH)(2)D(3) in inhibiting cancer cell growth and invasion because of its weaker binding to vitamin D binding protein (DBP), and more resistance to CYP24A1-dependent metabolism. In this study, we examined the metabolism of MART-10 and two other 2α-substituted analogs, 2α-(3-hydroxypropoxy)-1α,25(OH)(2)D(3) (O2C3) and 2α-(3-hydroxypropyl)-1α,25(OH)(2)D(3) (O1C3) by using human liver microsomes and human P450s. We demonstrated that O2C3 was converted to 1α,2α,25(OH)(3)D(3) in human liver microsomes, whereas both O1C3 and MART-10 were hardly metabolized. The metabolism of O2C3 was significantly inhibited by ketoconazole, and the recombinant human CYP3A4 converted O2C3 to 1α,2α,25(OH)(3)D(3), which suggests that CYP3A4 is responsible for the metabolism of O2C3 in human liver. The k(cat)/K(m) values of CYP3A4 for O1C3 and MART-10 are much smaller than that for O2C3. The k(cat)/K(m) values of human CYP24A1 for the three analogs are 1% (MART-10), 3% (O2C3), and 4% (O1C3) of that for 1α,25(OH)(2)D(3), indicating that MART-10 is the most resistant to CYP24A1 hydroxylation. On the other hand, 1α,2α,25(OH)(3)D(3), the metabolite of O2C3 by CYP3A4, was metabolized by CYP24A1 via multiple pathways similar to 1α,25(OH)(2)D(3), which suggests that O2C3 can be metabolized by two sequential hydroxylations, first by CYP3A4 and then by CYP24A1 in human body. These results suggest that modification at C-2α position and C-19 demethylenation markedly change metabolic profiles and biological activities of vitamin D analogs.
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Affiliation(s)
- Kaori Yasuda
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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4
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Maruyama K, Noguchi-Yachide T, Sugita K, Hashimoto Y, Ishikawa M. Novel selective anti-androgens with a diphenylpentane skeleton. Bioorg Med Chem Lett 2010; 20:6661-6. [DOI: 10.1016/j.bmcl.2010.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 08/30/2010] [Accepted: 09/02/2010] [Indexed: 10/19/2022]
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5
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Hosoda S, Tanatani A, Wakabayashi KI, Makishima M, Imai K, Miyachi H, Nagasawa K, Hashimoto Y. Ligands with a 3,3-diphenylpentane skeleton for nuclear vitamin D and androgen receptors: Dual activities and metabolic activation. Bioorg Med Chem 2006; 14:5489-502. [PMID: 16698269 DOI: 10.1016/j.bmc.2006.04.039] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Revised: 04/24/2006] [Accepted: 04/25/2006] [Indexed: 01/23/2023]
Abstract
Ligands possessing dual vitamin D(3) (VD(3))-agonistic and androgen-antagonistic activities with various activity spectra were prepared based on a substituted 3,3-diphenylpentane (DPP) skeleton. Among the compounds, (R,S)-DPP-1023 [(R,S)-7b] and (S,S)-DPP-0123 [(S,S)-7c] showed the most potent vitamin D(3)-agonistic activity [with potency comparable to that of 1alpha,25-dihydroxyvitamin D(3) (1,25-VD(3))] and nuclear androgen receptor (AR)-binding activity (with higher affinity than that of hydroxyflutamide), respectively. Metabolic activation (reduction of the carbonyl group) of pivaloyl analogs [DPP-1113 (3a), DPP-1013 (3b), DPP-0113 (3c), and DPP-0013 (3d)] in HL-60 cells was found to be necessary for binding to nuclear vitamin D(3) receptor (VDR).
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Affiliation(s)
- Shinnosuke Hosoda
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Bunkyo-ku, Japan.
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6
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Honzawa S, Hirasaka K, Yamamoto Y, Peleg S, Fujishima T, Kurihara M, Saito N, Kishimoto S, Sugiura T, Waku K, Takayama H, Kittaka A. Design, synthesis and biological evaluation of novel 1α,25-dihydroxyvitamin D3 analogues possessing aromatic ring on 2α-position. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.08.116] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Kato Y, Nakano Y, Sano H, Tanatani A, Kobayashi H, Shimazawa R, Koshino H, Hashimoto Y, Nagasawa K. Synthesis of 1α,25-dihydroxyvitamin D3-26,23-lactams (DLAMs), a novel series of 1α,25-dihydroxyvitamin D3 antagonist. Bioorg Med Chem Lett 2004; 14:2579-83. [PMID: 15109656 DOI: 10.1016/j.bmcl.2004.02.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2004] [Revised: 02/20/2004] [Accepted: 02/21/2004] [Indexed: 11/22/2022]
Abstract
Novel vitamin D(3) analogs having a lactam structure in their side chains, 1 alpha,25-dihydroxyvitamin D(3)-26,23-lactams (DLAMs), were designed based on the principle of regulation of the folding of helix-12 in the vitamin D nuclear receptor (VDR). The new analogs were synthesized via 1,3-dipolar cycloaddition reaction and subsequent reduction of the isoxazolidine as key steps. Among the analogs, (23S,25S)-DLAM-01 (4a) and (23S,25S)-DLAM-1P (5a) bind strongly to VDR. Moreover, these analogs were found to inhibit the differentiation of HL-60 cells induced by 1 alpha,25-dihydroxyvitamin D(3).
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Affiliation(s)
- Yuko Kato
- Institute of Molecular and Cellular Biosciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
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8
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Kittaka A, Suhara Y, Ono K, Yoshida A, Fujishima T, Saito N, Honzawa S, Kishimoto S, Sugiura T, Waku K, Takayama H. Synthesis of Novel 1a,25-Dihydroxy-19-norvitamin D3 with an Amide Conjugate. HETEROCYCLES 2004. [DOI: 10.3987/com-03-s(p)34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Honzawa S, Suhara Y, Nihei KI, Saito N, Kishimoto S, Fujishima T, Kurihara M, Sugiura T, Waku K, Takayama H, Kittaka A. Concise synthesis and biological activities of 2α-Alkyl- and 2α-(ω-Hydroxyalkyl)-20- epi -1α,25-dihydroxyvitamin D 3. Bioorg Med Chem Lett 2003; 13:3503-6. [PMID: 14505658 DOI: 10.1016/s0960-894x(03)00739-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We found a concise route to the Trost A-ring precursor enyne for synthesizing 2alpha-alkylated 1alpha,25-dihydroxyvitamin D(3) (1) from D-glucose. The enynes were coupled with the 20-epi-CD ring part to study the effect of the double modification of 2alpha-substitution and 20-epimerization upon biological activities of 1. The novel three analogues of 2alpha-alkyl- and four analogues of 2alpha-(omega-hydroxyalkyl)-20-epi-1alpha,25-dihydroxyvitamin D(3) (5b-d and 6a-d) showed higher binding affinity for vitamin D receptor (VDR) and more potent activity in induction of HL-60 cell differentiation than those of the natural hormone 1.
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Affiliation(s)
- Shinobu Honzawa
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa 199-0195, Japan
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10
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Fujishima T, Kojima Y, Azumaya I, Kittaka A, Takayama H. Design and synthesis of potent vitamin D receptor antagonists with A-ring modifications: remarkable effects of 2alpha-methyl introduction on antagonistic activity. Bioorg Med Chem 2003; 11:3621-31. [PMID: 12901907 DOI: 10.1016/s0968-0896(03)00371-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Novel A-ring analogues of the vitamin D receptor (VDR) antagonist (3a), ZK-159222, and its 24-epimer (3b) were convergently synthesized. Preparation of the CD-ring portions with the side chains of 3a,b, followed by palladium-catalyzed cross-coupling with the A-ring enyne precursors (15a,b), (3S,4S,5R)- and (3S,4S,5S)-bis[(tert-butyldimethylsilyl)oxy]-4-methyloct-1-en-7-yne, afforded the 2alpha-methyl-introduced analogues (4a,b) and their 3-epimers (5a,b). The biological profiles of the hybrid analogues were assessed in terms of affinity for VDR, and antagonistic activity to inhibit HL-60 cell differentiation induced by the natural hormone, 1alpha,25-dihydroxyvitamin D(3). The analogue 4a showed an approximately fivefold higher antagonistic activity compared with 3a. The 2alpha-methyl introduction into 3a increased the receptor affinity, thereby enhancing VDR antagonism. This approach to design potent antagonists based on hybridization of structural motifs in the A-ring and in the side chain may prove to be valuable.
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Affiliation(s)
- Toshie Fujishima
- Faculty of Pharmaceutical Sciences, Teikyo University, 199-0195, Sagamiko, Kanagawa, Japan.
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11
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Suhara Y, Kittaka A, Ono K, Kurihara M, Fujishima T, Yoshida A, Takayama H. Design and efficient synthesis of new stable 1alpha,25-dihydroxy-19-norvitamin D3 analogues containing amide bond. Bioorg Med Chem Lett 2002; 12:3533-6. [PMID: 12443770 DOI: 10.1016/s0960-894x(02)00800-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The design and synthesis of new 1alpha,25-dihydroxy-19-norvitamin D(3) analogues 3a-c, which have an amide bond in the molecule instead of the diene, are described. The A-ring moiety was constructed by a (3S,5S)-3,5-dihydroxypiperidine derivative (9, 11, or 13) prepared from D-mannose, and a CD-ring carboxylic acid 16 was synthesized from Grundmann's ketone. Coupling those parts gave desired 3a-c in good yield. This strategy can be applied in combinatorial chemistry; therefore, those compounds would be applicable as useful tools in the development of new drugs.
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Affiliation(s)
- Yoshitomo Suhara
- Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa 199-0195, Japan
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12
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Suhara Y, Kittaka A, Kishimoto S, Calverley MJ, Fujishima T, Saito N, Sugiura T, Waku K, Takayama H. Synthesis and testing of 2alpha-modified 1alpha,25-dihydroxyvitamin D(3) analogues with a double side chain: marked cell differentiation activity. Bioorg Med Chem Lett 2002; 12:3255-8. [PMID: 12392726 DOI: 10.1016/s0960-894x(02)00722-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The 2alpha-methyl-, 2alpha-(3-hydroxypropyl)-, and 2alpha-(3-hydroxypropoxy)-derivatives of the 'double side chain' analogue of 1alpha,25-dihydroxyvitamin D(3) were synthesized using Trost A-ring/CD-ring connective strategy. Regarding the requisite A-ring building blocks, a new, high yield and stereoselective route to the 2alpha-methyl compound starting from D-glucose was developed. All three new analogues showed potent HL-60 cancer cell differentiation activity.
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Affiliation(s)
- Yoshitomo Suhara
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, Japan
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13
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Fujishima T, Konno K, Nakagawa K, Tanaka M, Okano T, Kurihara M, Miyata N, Takayama H. Synthesis and biological evaluation of all A-ring stereoisomers of 5,6-trans-2-methyl-1,25-dihydroxyvitamin D(3) and their 20-epimers: possible binding modes of potent A-ring analogues to vitamin D receptor. CHEMISTRY & BIOLOGY 2001; 8:1011-24. [PMID: 11731293 DOI: 10.1016/s1074-5521(01)00062-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The secosteroid 1 alpha,25-dihydroxyvitamin D(3) (1) has a wide variety of biological activities, which makes it a promising therapeutic agent for the treatment of cancer, psoriasis and osteoporosis. Insight into the structure-activity relationships of the A-ring of 1 is still needed to assist the development of more potent and selective analogues as candidate chemotherapeutic agents, as well as to define the molecular mode of action. RESULTS All possible A-ring stereoisomers of 5,6-trans-2-methyl-1,25-dihydroxyvitamin D(3) (6a-h) and their 20-epimers (7a-h) were designed and efficiently synthesized. The dependence of the affinities for vitamin D receptor (VDR) and vitamin D binding protein (DBP), as well as the HL-60 cell differentiation-inducing activity, upon the stereochemistry of the A-ring and at C20 in the side chain was evaluated. CONCLUSIONS The binding affinities and potency of the 5,6-trans and 5,6-cis analogues were enhanced by a 2-methyl substituent in a certain orientation. Molecular docking studies based upon the X-ray crystal structure of VDR suggested that the axial 2-methyl group would be accommodated in a pocket surrounded by hydrophobic amino acid residues in the ligand binding domain, resulting in enhanced interaction.
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Affiliation(s)
- T Fujishima
- Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, Japan
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14
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Fujishima T, Zhaopeng L, Konno K, Nakagawa K, Okano T, Yamaguchi K, Takayama H. Highly potent cell differentiation-inducing analogues of 1alpha,25-dihydroxyvitamin D3: synthesis and biological activity of 2-methyl-1,25-dihydroxyvitamin D3 with side-chain modifications. Bioorg Med Chem 2001; 9:525-35. [PMID: 11249144 DOI: 10.1016/s0968-0896(00)00267-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Eight 2-methyl substituted analogues of 20-epi-22R-methyl-1alpha,25-dihydroxyvitamin D3 (5) and 20-epi-24,26,27-trihomo-22-oxa-1alpha,25-dihydroxyvitamin D3 (6: KH-1060) were convergently synthesized. Preparation of the CD-ring portions with modified side chains of 5 and 6, followed by palladium-catalyzed cross-coupling with the A-ring enyne synthons (20a-d), (3S,4S,5R)-, (3S,4R,5R)-, (3S,4S,5S)- and (3R,4R,5S)-3,5-bis[(tert-butyldimethylsilyl)oxy]-4-methyloct-1-en-7-yne, afforded two sets of four A-ring stereoisomers of 20-epi-2,22-dimethyl-1,25-dihydroxyvitamin D3 (7a-d) and 20-epi-24,26,27-trihomo-2-methyl-22-oxa-1,25-dihydroxyvitamin D3 (8a-d). The biological profiles of the hybrid analogues were assessed in terms of affinity for vitamin D receptor (VDR) and HL-60 cell differentiation-inducing activity in comparison with the natural hormone. The combined modifications of the A-ring at the 2-position and the side chain yielded analogues with high potency.
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Affiliation(s)
- T Fujishima
- Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, Japan
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15
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Suhara Y, Nihei KI, Tanigawa H, Fujishima T, Konno K, Nakagawa K, Okano T, Takayama H. Syntheses and biological evaluation of novel 2alpha-substituted 1alpha,25-dihydroxyvitamin D3 analogues. Bioorg Med Chem Lett 2000; 10:1129-32. [PMID: 10843234 DOI: 10.1016/s0960-894x(00)00189-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Novel 2alpha-substituted 1alpha,25-dihydroxyvitamin D3 analogues were efficiently synthesized and their biological activities were evaluated. 2alpha-Methyl-1alpha,25-dihydroxyvitamin D3 (2), whose unique biological activities were previously reported, was modified to 2alpha-alkyl (ethyl and propyl) and 2alpha-hydroxyalkyl (hydroxymethyl, hydroxyethyl, and hydroxypropyl) analogues 3-7 by elongation of the alkyl chain and/or introduction of a terminal hydroxyl group. 2alpha-Hydroxypropyl-1alpha,25-dihydroxyvitamin D3 (7) exhibited an exceptionally potent calcium-regulating effect and a unique activity profile.
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Affiliation(s)
- Y Suhara
- Faculty of Pharaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, Japan
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16
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Fujishima T, Konno K, Nakagawa K, Kurobe M, Okano T, Takayama H. Efficient synthesis and biological evaluation of all A-ring diastereomers of 1alpha,25-dihydroxyvitamin D3 and its 20-epimer. Bioorg Med Chem 2000; 8:123-34. [PMID: 10968271 DOI: 10.1016/s0968-0896(99)00262-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
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 group to the olefin by the Sharpless asymmetric dihydroxylation, provided all four possible stereoisomers of A-ring enynes (3). i.e., (3R,5R)-, (3R,5S)-, (3S,5R)- and (3S,5S)-bis[(tert-butyldimethylsilyl)oxy]oct-1-en-7-yne, in good overall yield. Palladium-catalyzed cross-coupling of the A-ring synthon with the 20-epi CD-ring portion (5), (E)-(20S)-de-A,B-8-(bromomethylene)cholestan-25-ol, followed by deprotection, afforded the requisite diastereomers of 20-epi-1alpha,25-dihydroxyvitamin D3 (2). The biological profiles of the synthesized stereoisomers were assessed in terms of affinities for vitamin D receptor (VDR) and vitamin D binding protein (DBP). HL-60 cell differentiation-inducing activity and in vivo calcium-regulating potency in comparison with the natural hormone.
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Affiliation(s)
- T Fujishima
- Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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17
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Oshida J, Okamoto M, Ishizuka S, Azuma S. Synthesis and biological evaluation of 1alpha,24-dihydroxy-25-nitrovitamin D3. Bioorg Med Chem Lett 1999; 9:381-4. [PMID: 10091688 DOI: 10.1016/s0960-894x(99)00013-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
1Alpha,24(R)Dihydroxy-25-nitrovitamin D3 1 and 1alpha,24(S)-dihydroxy-25-nitrovitamin D3 2 were synthesized using the palladium-catalyzed alkylative enyne cyclization reaction. Their biological properties were studied based on VDR binding affinity and HL-60 cell differentiation activity.
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Affiliation(s)
- J Oshida
- Iwakuni Pharmaceutical Factory, Teijin, Ltd., Iwakuni, Yamaguchi, Japan
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18
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Fujishima T, Liu Z, Miura D, Chokki M, Ishizuka S, Konno K, Takayama H. Synthesis and biological activity of 2-methyl-20-epi analogues of 1 alpha,25-dihydroxyvitamin D3. Bioorg Med Chem Lett 1998; 8:2145-8. [PMID: 9873502 DOI: 10.1016/s0960-894x(98)00363-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Synthesis and biological evaluation of all eight possible A-ring diastereomers of 2-methyl-20-epi-1,25-dihydroxyvitamin D3 are described. Among the analogues synthesized. 2 alpha-methyl-20-epi-1 alpha,25-dihydroxyvitamin D3 exhibited exceptionally high potency. The double modification of 2-methyl substitution and 20-epimerization yielded analogues with unique activity profiles.
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Affiliation(s)
- T Fujishima
- Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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19
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Konno K, Maki S, Fujishima T, Liu Z, Miura D, Chokki M, Takayama H. A novel and practical route to A-ring enyne synthon for 1 alpha,25-dihydroxyvitamin D3 analogs: synthesis of A-ring diastereomers of 1 alpha,25-dihydroxyvitamin D2 and 3-methyl-1,25-dihydroxyvitamin D3. Bioorg Med Chem Lett 1998; 8:151-6. [PMID: 9871644 DOI: 10.1016/s0960-894x(97)10204-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
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 of the 2-methyl analogs showed the alpha alpha beta-isomer to be more potent than 1.
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Affiliation(s)
- K Konno
- Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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Yamamoto K, Ohta M, DeLuca HF, Yamada S. On the side chain conformation of 1α,25-dihydroxyvitamin D3 responsible for binding to the receptor. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00142-g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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