6-Azathymine
(Synonyms: 6-氮杂胸腺嘧啶) 目录号 : GC60031
6-Azathymine，胸腺嘧啶的6-氮类似物，是一种有效的D-3-氨基异丁酸酯-丙酮酸氨基转移酶(D-3-aminoisobutyrate-pyruvateaminotransferase)抑制剂。6-Azathymine可抑制DNA的生物合成，并具有抗菌和抗病毒活性。
Cas No.:932-53-6
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
6-Azathymine, a 6-nitrogen analog of thymine, is a potent D-3-aminoisobutyrate-pyruvate aminotransferase inhibitor. 6-Azathymine inhibits the biosynthesis of DNA, and has antibacterial and antiviral activities[1][2][3][4].
6-Azathymine is a competitive antagonist of the growth of Streptococcus faecalis (8043) and several other strains of microorganisms. Studies of the mechanism of action of 6-Azathymine reveal that S. faecalis can convert the analog to the corresponding deoxyriboside, azathymidine[2].
[1]. N Tamaki, et al. Purification, Characterization and Inhibition of D-3-aminoisobutyrate Aminotransferase From the Rat Liver. Eur J Biochem. 1990 Apr 20;189(1):39-45. [2]. W H PRUSOFF, et al. Effect of the Deoxyriboside of 6-azathymine (Azathymidine) on the Biosynthesis of Deoxyribonucleic Acid by Bone Marrow and Neoplastic Cells (In Vitro). Biochim Biophys Acta. 1956 Apr;20(1):209-14. [3]. R A GAITO, et al. Studies on the Metabolism of Thymine and 6-azathymine. Biochem Pharmacol. Apr-May 1962;11:323-36. [4]. B. Gabrielsen, et al. In vitro and in vivo antiviral (RNA) evaluation of orotidine 51-monophosphatedecarboxylase inhibitors and analogues including 6-azauridine-51-(ethylmethoxyalaninyl)phosphate (a 51-monophosphate prodrug). Antiviral Chemistry & Chemotherapy (1994) 5(4), 209-220.
| Cas No. | 932-53-6 | SDF | |
| 别名 | 6-氮杂胸腺嘧啶 | ||
| Canonical SMILES | O=C(N1)NN=C(C)C1=O | ||
| 分子式 | C4H5N3O2 | 分子量 | 127.1 |
| 溶解度 | 储存条件 | ||
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 7.8678 mL | 39.3391 mL | 78.6782 mL |
| 5 mM | 1.5736 mL | 7.8678 mL | 15.7356 mL |
| 10 mM | 0.7868 mL | 3.9339 mL | 7.8678 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Enzymatic synthesis and phosphorolysis of 4(2)-thioxo- and 6(5)-azapyrimidine nucleosides by E. coli nucleoside phosphorylases
Beilstein J Org Chem 2016 Dec 1;12:2588-2601.PMID:28144328DOI:10.3762/bjoc.12.254.
The trans-2-deoxyribosylation of 4-thiouracil (4SUra) and 2-thiouracil (2SUra), as well as 6-azauracil, 6-Azathymine and 6-aza-2-thiothymine was studied using dG and E. coli purine nucleoside phosphorylase (PNP) for the in situ generation of 2-deoxy-α-D-ribofuranose-1-phosphate (dRib-1P) followed by its coupling with the bases catalyzed by either E. coli thymidine (TP) or uridine (UP) phosphorylases. 4SUra revealed satisfactory substrate activity for UP and, unexpectedly, complete inertness for TP; no formation of 2'-deoxy-2-thiouridine (2SUd) was observed under analogous reaction conditions in the presence of UP and TP. On the contrary, 2SU, 2SUd, 4STd and 2STd are good substrates for both UP and TP; moreover, 2SU, 4STd and 2'-deoxy-5-azacytidine (Decitabine) are substrates for PNP and the phosphorolysis of the latter is reversible. Condensation of 2SUra and 5-azacytosine with dRib-1P (Ba salt) catalyzed by the accordant UP and PNP in Tris∙HCl buffer gave 2SUd and 2'-deoxy-5-azacytidine in 27% and 15% yields, respectively. 6-Azauracil and 6-Azathymine showed good substrate properties for both TP and UP, whereas only TP recognizes 2-thio-6-azathymine as a substrate. 5-Phenyl and 5-tert-butyl derivatives of 6-azauracil and its 2-thioxo derivative were tested as substrates for UP and TP, and only 5-phenyl- and 5-tert-butyl-6-azauracils displayed very low substrate activity. The role of structural peculiarities and electronic properties in the substrate recognition by E. coli nucleoside phosphorylases is discussed.
Intercalation of water molecules between nucleic acid bases in the crystal structures of 6-Azathymine hemihydrate and 5-amino-2-thiocytosine dihydrochloride dihydrate
Arch Biochem Biophys 1985 May 15;239(1):38-45.PMID:4004262DOI:10.1016/0003-9861(85)90809-4.
The crystal structure of 6-Azathymine hemihydrate (6AzTH) exhibits a novel intercalation of water molecules interposed half-way between the modified bases 6.3 to 6.7 A apart. The crystal contains four molecules of 6-Azathymine (6AzT) and two water molecules as the independent repeating unit. These two water molecules together with the four bases form two separate water sandwiches. In the crystal structure these sandwiches form two sets of local clusters. The anhydrous crystalline form of 6AzT, on the other hand, is stabilized by base stacking interactions. Both the water molecules in 6AzTH that are involved in sandwich formation have trigonal coordination around them. A reexamination of the crystal structure of 5-amino-2-thiocytosine (5A2TC) revealed that one of the water molecules in this structure also forms a water sandwich and has trigonal coordination whereas the other water molecule with tetrahedral coordination does not form a sandwich. The environment and the characteristics of the intercalated water molecule in these structures suggest a possible role for such water intercalations in the dynamics of DNA. Crystals of 6AzTH are monoclinic, space group P21/n, with unit cell parameters a = 8.861 (1), b = 13.177 (3), c = 20.662 (2) A, beta = 93.35 (1) degrees, and Z = 16. From diffractometer data (2503 reflections, greater than or equal to 3 sigma), the crystal structure was solved and refined to an R of 0.056.
Synthesis and biological evaluation of L- and D-configuration 1,3-dioxolane 5-azacytosine and 6-Azathymine nucleosides
Bioorg Med Chem Lett 2000 Sep 18;10(18):2145-8.PMID:10999490DOI:10.1016/s0960-894x(00)00418-2.
Novel L- and D-configuration dioxolane 5-azacytosine and 6-Azathymine nucleosides have been synthesized and evaluated for biological activity. (-)-(2S,4S)-1-[2-(Hydroxymethyl)-1,3-dioxolan-4-yl]-5-azacytosine (6) showed significant activity against HBV, whereas the D-configuration analogue (14) has been found to exhibit potent anti-HIV activity.
Inhibitory effect of 6-azauracil on purified rabbit liver 4-aminobutyrate aminotransferase
J Biochem 1983 Apr;93(4):955-9.PMID:6688075DOI:10.1093/oxfordjournals.jbchem.a134250.
Among uracil derivatives investigated, 6-azauracil, 6-Azathymine, and 5-iodouracil were found to be potent inhibitors of purified rabbit liver 4-aminobutyrate aminotransferase while 6-azauridine and 6-azauridine 5'-phosphate were not. The enzyme inhibited by 6-azauracil was reactivated by dialysis but not by addition of pyridoxal 5'-phosphate. 6-Azauracil acted as a non-competitive inhibitor with respect to beta-alanine as well as 2-oxoglutaric acid, and had a K1 of approximately 0.7 mM at pH 7.3. The kinetic data suggested that 2-oxoglutaric acid acted as an inhibitor as well as an amino acceptor for the enzyme; a catalytic site was associated with an apparent Km of 0.15 mM for 2-oxoglutaric acid and a low affinity site was associated with an I50 of approximately 5 mM for the 2-oxo acid. With inhibitory concentrations of 2-oxoglutaric acid as substrate the inhibitory effect of 6-azauracil was considerably diminished. From these findings, the inhibitory effect of 6-azauracil was revealed to be different from that of structural analogs of 4-aminobutyric acid showing that 6-azauracil is a new type of 4-aminobutyrate aminotransferase inhibitor.
Quantitative measurement of radiation-induced base products in DNA using gas chromatography-mass spectrometry
Radiat Res 1989 Aug;119(2):219-31.PMID:2756114doi
Gas chromatography-mass spectrometry with selected-ion monitoring was used to study radiation-induced damage to DNA. Quantitative analysis of modified purine and pyrimidine bases resulting from exposure to ionizing radiation using this technique is dependent upon the selection of appropriate internal standards and calibration of the mass spectrometer for its response to known quantities of the internal standards and the products of interest. The compounds 6-Azathymine and 8-azaadenine were found to be suitable internal standards for quantitative measurement of base damage in DNA. For the purpose of calibration of the mass spectrometer. relative molar response factors for intense characteristic ions were determined for the trimethylsilyl derivatives of 5-hydroxyuracil, thymine glycol, and 5,6-dihydrothymine using 6-Azathymine, and for the trimethylsilyl derivatives of 4,6-diamino-5-formamidopyrimidine, 8-hydroxyadenine, 2,6-diamino-4-hydroxy-5-formamidopyrimidine, and 8-hydroxyguanine using 8-azaadenine. Accurate measurement of the yield of radiation-induced modifications to the DNA bases is also dependent upon two chemical steps in which the purines and pyrimidines are released from the sugar-phosphate backbone and then derivatized to make them volatile for gas chromatography. The completeness of these reactions, in addition to assessing the stability of the modified DNA bases in acid and their trimethylsilylated derivatives over the time necessary to complete the experimental analysis was also examined. Application of this methodology to the measurement of radiation-induced base modification in heat-denatured, nitrous oxidesaturated aqueous solutions of DNA is presented.