- Novel Tetrahydropyrido[4,3-d]pyrimidines as Potent Inhibitors of Chaperone Heat Shock Protein 90
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Heat shock protein 90 (Hsp90) is a potential target for oncology therapeutics. Some inhibitors have shown antitumor effects in clinical trials, spurring the discovery of small molecule Hsp90 inhibitors. Here, we describe the structural optimization studies of a hit compound, tetrahydropyrido[4,3-d]pyrimidine-based Hsp90 inhibitor 15, which exhibits inhibitory activity against Hsp90. A series of analogues were synthesized, and their structure-activity and structure-property relationships were analyzed. These explorations led to the discovery of compound 73, which exhibited potent in vitro activities, good physicochemical properties, favorable ADME properties, and a potent antitumor effect in an HCT116 xenograft model. Furthermore, 73 exhibited no ocular toxicity in a rat retinal damage model, suggesting it is a relatively safe Hsp90 inhibitor. As a promising antitumor agent, 73 was progressed for further preclinical evaluation.
- Jiang, Fen,Wang, Hui-Jie,Jin, Yu-Hui,Zhang, Qiong,Wang, Zhi-Hui,Jia, Jian-Min,Liu, Fang,Wang, Lei,Bao, Qi-Chao,Li, Dong-Dong,You, Qi-Dong,Xu, Xiao-Li
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supporting information
p. 10498 - 10519
(2016/12/16)
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- Identification of a new series of potent diphenol HSP90 inhibitors by fragment merging and structure-based optimization
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Heat shock protein 90 (HSP90) is a molecular chaperone to fold and maintain the proper conformation of many signaling proteins, especially some oncogenic proteins and mutated unstable proteins. Inhibition of HSP90 was recognized as an effective approach to simultaneously suppress several aberrant signaling pathways, and therefore it was considered as a novel target for cancer therapy. Here, by integrating several techniques including the fragment-based drug discovery method, fragment merging, computer aided inhibitor optimization, and structure-based drug design, we were able to identify a series of HSP90 inhibitors. Among them, inhibitors 13, 32, 36 and 40 can inhibit HSP90 with IC50 about 20-40 nM, which is at least 200-fold more potent than initial fragments in the protein binding assay. These new HSP90 inhibitors not only explore interactions with an under-studied subpocket, also offer new chemotypes for the development of novel HSP90 inhibitors as anticancer drugs.
- Ren, Jing,Li, Jian,Wang, Yueqin,Chen, Wuyan,Shen, Aijun,Liu, Hongchun,Chen, Danqi,Cao, Danyan,Li, Yanlian,Zhang, Naixia,Xu, Yechun,Geng, Meiyu,He, Jianhua,Xiong, Bing,Shen, Jingkang
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p. 2525 - 2529
(2014/05/20)
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- Discovery of (2,4-Dihydroxy-5-isopropylphenyl)-[5-(4-methylpiperazin-1- ylmethyl)-1,3-dihydroisoindol-2-yl]methanone (AT13387), a novel inhibitor of the molecular chaperone Hsp90 by fragment based drug design
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Inhibitors of the molecular chaperone heat shock protein 90 (Hsp90) are currently generating significant interest in clinical development as potential treatments for cancer. In a preceding publication (DOI: 10.1021/jm100059d) we describe Astex's approach to screening fragments against Hsp90 and the subsequent optimization of two hits into leads with inhibitory activities in the low nanomolar range. This paper describes the structure guided optimization of the 2,4-dihydroxybenzamide lead molecule 1 and details some of the drug discovery strategies employed in the identification of AT13387 (35), which has progressed through preclinical development and is currently being tested in man.
- Woodhead, Andrew J.,Angove, Hayley,Carr, Maria G.,Chessari, Gianni,Congreve, Miles,Coyle, Joseph E.,Cosme, Jose,Graham, Brent,Day, Philip J.,Downham, Robert,Fazal, Lynsey,Feltell, Ruth,Figueroa, Eva,Frederickson, Martyn,Lewis, Jonathan,McMenamin, Rachel,Murray, Christopher W.,O'Brien, M. Alistair,Parra, Lina,Patel, Sahil,Phillips, Theresa,Rees, David C.,Rich, Sharna,Smith, Donna-Michelle,Trewartha, Gary,Vinkovic, Mladen,Williams, Brian,Woolford, Alison J.-A.
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supporting information; experimental part
p. 5956 - 5969
(2010/11/04)
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- PHARMACEUTICAL COMPOUNDS
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The invention provides a compound for use in medicine, the compound being a compound of the formula (VI0) or a salt, solvate, tautomer or N-oxide thereof: wherein the bicyclic group: is selected from the structures C1, C5 and C6: wherein n is 0, 1, 2 or 3; R1 is hydrogen, hydroxy, or O—Rz; R2a is hydroxy, methoxy or O—Rz; provided that at least one of R1 and R2a is O—Rz; Rz is Lp-Rp1; SO3H; a glucuronide residue; a mono-, di- or tripeptide residue; or Lp is a bond, C═O, (C═O)O, (C═O)NRp1 or S(O)xNRp1; x is 1 or 2; Rp1 is hydrogen or a an optionally substituted C1-25 hydrocarbyl group containing 0, 1 or 2 carbocyclic rings and 0, 1, 2, 3, 4, 5 or 6 carbon-carbon multiple bonds, provided that Rp1 is not hydrogen when Lp is a bond, C═O or (C═O)O; and provided also that O—Rz does not contain an O—O moiety; and excluding compounds wherein R1 is hydroxy and R2a is methoxy; Rp2 and Rp3 are the same or different and each is a group Rp1; and R3, R4a, R8 and R10 are defined in the claims. The compounds of formula (VI0) are pro-drugs of parent compounds wherein R1 and/or R2a are hydroxy, wherein the parent compounds have Hsp90 inhibiting activity.
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Page/Page column 66; 67
(2010/06/22)
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- TRIAZOLE DERIVATIVE AS AN HSP 90 INHIBITOR
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5-[4-(2-Methylphenyl)-3-hydroxy-4H-1,2,4-triazol-5-yl]-2,4-dihydroxy-N-methyl-N-butylbenzamide is an HSP90 inhibitor and can be used for the preparation of a medicament for the treatment of diseases in which the inhibition, regulation and/or modulation of HSP90 plays a role.
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Page/Page column 15-16
(2010/05/13)
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- TRIAZOLE DERIVATIVES II
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Novel triazole derivatives of the formula (I) in which R1—R6 and Y have the meanings indicated in Claim 1, are HSP90 inhibitors and can be used for the preparation of a medicament for the treatment of diseases in which the inhibition, regulation and/or modulation of HSP90 plays a role.
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Page/Page column 17
(2010/02/17)
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- SUBSTITUTED TETRAZOLE COMPOUNDS AND USES THEREOF
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The present invention provides tetrazole compounds, and methods of preparation of these compounds. The present invention also relates to pharmaceutical compositions comprising the tetrazole compounds. The present invention provides methods of treating a c
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Page/Page column 20
(2009/05/28)
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- PHARMACEUTICAL COMBINATIONS
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The invention provides combinations comprising (or consisting essentially of) one or more ancillary compound(s) and a compound of the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; optionally substituted C1-5 hydrocarbyl and optionally substituted C1- 5 hydrocarbyloxy; R4 is selected from hydrogen; a group -(O)n-R7 where n is 0 or 1 and R7 is an optionally substituted acyclic C1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and optionally substituted mono- or di-C1-5 hydrocarbyl-amino; or R3 and R4 together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and NR5R6 forms an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 ring members are heteroatoms selected from oxygen, nitrogen and sulphur. The combinations have activity as Hsp90 inhibitors.
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Page/Page column 193
(2008/06/13)
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- PHARMACEUTICAL COMBINATIONS
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The invention provides combinations comprising (or consisting essentially of) one or more ancillary compound(s) and a compound of the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; optionally substituted C1-5 hydrocarbyl and optionally substituted C1-5 hydrocarbyloxy; R4 is selected from hydrogen; a group -(O)n-R7 where n is 0 or 1 and R7 is an optionally substituted acyclic C1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and optionally substituted mono- or di-C1-5 hydrocarbyl-amino; or R3 and R4 together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and NR5R6 forms an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 ring members are heteroatoms selected from oxygen, nitrogen and sulphur. The combinations have activity as Hsp90 and/or glycogen synthase kinase-3 and/or cyclin dependent kinase inhibitors.
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Page/Page column 215-216
(2008/06/13)
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- PHARMACEUTICAL COMBINATIONS
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The invention provides combinations comprising (or consisting essentially of) one or more ancillary compound(s) and a compound of the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; optionally substituted C1-5 hydrocarbyl and optionally substituted C1-5 hydrocarbyloxy; R4 is selected from hydrogen; a group -(O)n-R7 where n is 0 or 1 and R7 is an optionally substituted acyclic C1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and optionally substituted mono- or di-C1-5 hydrocarbyl-amino; or R3 and R4 together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and NR5R6 forms an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 ring members are heteroatoms selected from oxygen, nitrogen and sulphur. The combinations have activity as Hsp90 and/or glycogen synthase kinase-3 and/or cyclin dependent kinase and/or aurora kinase inhibitors.
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Page/Page column 93; 268
(2008/06/13)
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- PHARMACEUTICAL COMPOUNDS
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The invention provides the use of a compound for the manufacture of a medicament for the treatment of pain, wherein the compound is a compound of the formula (Vl): or a salt, solvate, tautomer or N-oxide thereof; wherein the bicydic group: is selected from the structures C1, C5 and C6: wherein n, R1, R2a, R3, R4a, R8 and R10 are as defined in the claims. The invention also provides the use of a compound of the formula (Vl) for the manufacture of a medicament for the prophylaxis or treatment of a fungal, protozoal, viral or parasitic disease state or condition (other than a disease state or condition due to Plasmodium falciparum) or for use in the prophylaxis or treatment of Ewing's sarcoma, atherosclerosis or lupus erythematosus
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Page/Page column 112
(2008/06/13)
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- TRIAZOLE COMPOUNDS THAT MODULATE HSP90 ACTIVITY
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The present invention relates to substituted triazole compounds and compositions comprising substituted triazole compounds. The invention further relates to methods of inhibiting the activity of Hsp90 in a subject in need thereof and methods for preventing or treating hyperproliferative disorders, such as cancer, in a subject in need thereof comprising administering to the subject a substituted triazole compound of the invention, or a composition comprising such a compound.
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Page/Page column 222
(2008/06/13)
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- PHARMACEUTICAL COMPOUNDS
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The invention provides a compound for use as an inhibitor of Hsp90, the compound having the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; C 1-5 hydrocarbyl and C 1-5 hydrocarbyloxy; wherein the C 1-5 hydrocarbyl and C 1-5 hydrocarbyloxy moieties are each optionally substituted by one or more substituents selected from hydroxy, halogen, C 1-2 alkoxy, amino, mono- and di-C 1-2 alkylamino, and aryl and heteroaryl groups of 5 to 12 ring members; R4 is selected from hydrogen; a group -(O)n-R7 where n is 0 or 1 and R7 is an acyclic C 1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and mono- or di-C 1-5 hydrocarbyl-amino, wherein the acyclic Ci-5 hydrocarbyl group and the mono and di-C 1-5 hydrocarbylamino moieties in each instance are optionally substituted by one or more substituents selected from hydroxy, halogen, C 1-2 alkoxy, amino, mono- and di-C 1-2 alkylamino, and aryl and heteroaryl groups of 5 to 12 ring members; or R3 and R4 together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and R5 and R6 are as defined in the claims.
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Page/Page column 63; 84
(2008/06/13)
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- TRIAZOLE DERIVATIVES
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The invention relates to novel triazole derivatives of formula (I) wherein R1 - R6 and Y have the designations cited in patent claim 1. Said derivatives are HSP90 inhibitors, and can be used to produce a medicament for treating diseases wherefore the inhibition, regulation and/or modulation of HSP90 plays an important role.
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Page/Page column 92
(2008/06/13)
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