CGS 21223 在
nucleoside oxidase from S. maltophilia 作用下,
以
phosphate buffer 为溶剂,
生成 (2S,3S,4R,5R)-5-(6-Amino-2-phenethylamino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-carboxylic acid
参考文献:
名称:
A versatile procedure for the generation of nucleoside 5′-carboxylic acids using nucleoside oxidase
摘要:
The nucleoside oxidase from Stenotrophomonas maltophilia (FERM BP-2252) has been used to generate 5'-carboxylic acid derivatives of nucleoside analogues. The enzyme, which has a surprisingly broad substrate specificity for unnatural nucleosides, has been immobilised and used at preparative scale, (C) 1998 Elsevier Science Ltd. All rights reserved.
Adenosine Analogues as Inhibitors of Trypanosoma brucei Phosphoglycerate Kinase: Elucidation of a Novel Binding Mode for a 2-Amino-N6-Substituted Adenosine
摘要:
As part of a project aimed at structure-based design of adenosine analogues as drugs against African trypanosomiasis, N-6-, 2-amino-N-6-, and N-2-substituted adenosine analogues were synthesized and tested to establish structure-activity relationships for inhibiting Trypanosoma brucei glycosomal phosphoglycerate kinase (PGK), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and glycerol-3-phosphate dehydrogenase (GPDH). Evaluation of X-ray structures of parasite PGK, GAPDH, and GPDH complexed with their adenosyl-bearing substrates led us to generate a series of adenosine analogues which would target all three enzymes simultaneously. There was a modest preference by PGK for NG-substituted analogues bearing the 2-amino group. The best compound in this series, 2-amino-N-6-[2 "-(p-hydroxyphenyl)ethyl]adenosine (46b), displayed a 23-fold improvement over adenosine with an IC50 of 130 muM. 2-[[2 "-(p-Hydroxyphenyl)ethyl]amino]adenosine (46c) was a weak inhibitor of T. brucei PGK with an IC50 of 500 muM. To explore the potential of an additive effect that having the N-6 and N-2 substitutions in one molecule might provide, the best ligands from the two series were incorporated into N-6,N-2-disubstituted adenosine analogues to yield N-6-(2 " -phenylethyl)-2-[(2 " -phenylethyl)amino]adenosine (69) as a 30 muM inhibitor of T. brucei PGK which is 100-fold more potent than the adenosine template. In contrast, these series gave no compounds that inhibited parasitic GAPDH or GPDH more than 10-20% when tested at 1.0 mM. A 3.0 Angstrom X-ray structure of a T, brucei PGK/46b complex revealed a binding mode in which the nucleoside analogue was flipped and the ribosyl moiety adopted a syn conformation as compared with the previously determined binding mode of ADP. Molecular docking experiments using QXP and SAS program suites reproduced this "flipped and rotated" binding mode.
Highly selective adenosine A2 receptor agonists in a series of N-alkylated 2-aminoadenosines
作者:John E. Francis、Randy L. Webb、Geetha R. Ghai、Alan J. Hutchison、Michael A. Moskal、Reynalda DeJesus、Rina Yokoyama、Stephen L. Rovinski、Nicolina Contardo
DOI:10.1021/jm00112a035
日期:1991.8
with the moderately A2 receptor selective adenosine agonist 2-anilinoadenosine (CV-1808). High selectivity combined with significant affinity at the A2 receptor in rat membranes was observed for those amines bearing a two-carbon chain to which was attached an aryl, heteroaryl, or alicyclic moiety. 2-(2-Phenethylamino)adenosine (3d), a 14-fold A2 selective compound, was modified by introduction of a variety
Disclosed are 2-substituted adenosine derivatives of the formula
wherein R represents a substituted amino grouping as defined in the specification, which are therapeutically effective adenosine-2 (A-2) agonists. They are prepared by methods known per se.
公开了式中的 2-取代腺苷衍生物
其中 R 代表说明书中定义的取代氨基,是治疗有效的腺苷-2(A-2)激动剂。它们是通过本身已知的方法制备的。
Adenosine Analogues as Inhibitors of <i>Trypanosoma </i><i>b</i><i>rucei </i>Phosphoglycerate Kinase: Elucidation of a Novel Binding Mode for a 2-Amino-N<sup>6</sup>-Substituted Adenosine
作者:Jerome C. Bressi、Jungwoo Choe、Melinda T. Hough、Frederick S. Buckner、Wesley C. Van Voorhis、Christophe L. M. J. Verlinde、Wim G. J. Hol、Michael H. Gelb
DOI:10.1021/jm000287a
日期:2000.11.1
As part of a project aimed at structure-based design of adenosine analogues as drugs against African trypanosomiasis, N-6-, 2-amino-N-6-, and N-2-substituted adenosine analogues were synthesized and tested to establish structure-activity relationships for inhibiting Trypanosoma brucei glycosomal phosphoglycerate kinase (PGK), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and glycerol-3-phosphate dehydrogenase (GPDH). Evaluation of X-ray structures of parasite PGK, GAPDH, and GPDH complexed with their adenosyl-bearing substrates led us to generate a series of adenosine analogues which would target all three enzymes simultaneously. There was a modest preference by PGK for NG-substituted analogues bearing the 2-amino group. The best compound in this series, 2-amino-N-6-[2 "-(p-hydroxyphenyl)ethyl]adenosine (46b), displayed a 23-fold improvement over adenosine with an IC50 of 130 muM. 2-[[2 "-(p-Hydroxyphenyl)ethyl]amino]adenosine (46c) was a weak inhibitor of T. brucei PGK with an IC50 of 500 muM. To explore the potential of an additive effect that having the N-6 and N-2 substitutions in one molecule might provide, the best ligands from the two series were incorporated into N-6,N-2-disubstituted adenosine analogues to yield N-6-(2 " -phenylethyl)-2-[(2 " -phenylethyl)amino]adenosine (69) as a 30 muM inhibitor of T. brucei PGK which is 100-fold more potent than the adenosine template. In contrast, these series gave no compounds that inhibited parasitic GAPDH or GPDH more than 10-20% when tested at 1.0 mM. A 3.0 Angstrom X-ray structure of a T, brucei PGK/46b complex revealed a binding mode in which the nucleoside analogue was flipped and the ribosyl moiety adopted a syn conformation as compared with the previously determined binding mode of ADP. Molecular docking experiments using QXP and SAS program suites reproduced this "flipped and rotated" binding mode.
A versatile procedure for the generation of nucleoside 5′-carboxylic acids using nucleoside oxidase
作者:Mahmoud Mahmoudian、Brian A.M. Rudd、Brian Cox、Chris S. Drake、Richard M. Hall、Paul Stead、Michael J. Dawson、Malcolm Chandler、David G. Livermore、Nicholas J. Turner、Gareth Jenkins
DOI:10.1016/s0040-4020(98)00456-6
日期:1998.7
The nucleoside oxidase from Stenotrophomonas maltophilia (FERM BP-2252) has been used to generate 5'-carboxylic acid derivatives of nucleoside analogues. The enzyme, which has a surprisingly broad substrate specificity for unnatural nucleosides, has been immobilised and used at preparative scale, (C) 1998 Elsevier Science Ltd. All rights reserved.