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1541
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1542“…In the title compound, C(26)H(26)N(2)O(6)S, the benzene ring is positioned axially to the thiazolopyrimidine ring and bisects it with a dihedral angle of 80.94 (7)°. The pyrimidine ring adopts a flattened boat conformation. …”
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1543
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1544por Al-Majid, Abdullah M., Barakat, Assem, AL-Najjar, Hany J., Mabkhot, Yahia N., Ghabbour, Hazem A., Fun, Hoong-KunEnlace del recurso
Publicado 2014
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1545“…Predictive quantitative structure–activity relationship was performed on the novel4-oxo-1,4-dihydroquinoline and 4-oxo-4H-pyrido[1,2-a]pyrimidine derivatives to explore relationship between the structure of synthesized compounds and their anti-HIV-1 activities. …”
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1546por El Fal, Mohammed, Ramli, Youssef, Essassi, El Mokhtar, Saadi, Mohamed, El Ammari, Lahcen“…In the title compound, C(22)H(22)N(6)S, the pyrazolo[3,4-d]pyrimidine rings system is almost planar, with the r.m.s. deviation for the fitted atoms being 0.011 Å. …”
Publicado 2015
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1547
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1548“…One of the amuvatinib derivatives, N-(2H-1,3-benzodioxol-5-yl)-4-{thieno[3,2-d]pyrimidin-4-yl}piperazine-1-carboxamide, termed compound 6, was found to be efficacious in tumor cells experiencing glucose starvation. …”
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1549por Wu, Yumeng, Tang, Chengrun, Rui, Ruomei, Yang, Liumeng, Ding, Wei, Wang, Jiangyuan, Li, Yiming, Lai, Christopher C., Wang, Yueping, Luo, Ronghua, Xiao, Weilie, Zhang, Hongbing, Zheng, Yongtang, He, Yanping“…A series of 2-(((5-akly/aryl-1H-pyrazol-3-yl)methyl)thio)-5-alkyl-6-(cyclohexylmethyl)-pyrimidin-4(3H)-ones were synthesized and their anti-HIV-1 activities were evaluated. …”
Publicado 2020
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1550“…An exhaustive quantum mechanical calculations on a pharmaceutically critical molecule N-{4-[(4-amino-3-phenyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)sulfonyl]phenyl}acetamide have been investigated through the B3LYP/6-31G∗∗ Density Functional and HF/6-31G∗∗ Wave Function techniques. …”
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1551por Dashyan, Shushanik Sh., Babaev, Eugene V., Paronikyan, Ervand G., Ayvazyan, Armen G., Paronikyan, Ruzanna G., Hunanyan, Lernik S.“…Background: Heterocyclic compounds and their fused analogs, which contain pharmacophore fragments such as pyridine, thiophene and pyrimidine rings, are of great interest due to their broad spectrum of biological activity. …”
Publicado 2022
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1552“…A novel compound N-benzyl-2-oxo-1,2-dihydrofuro [3,4-d]pyrimidine-3(4H)-carboxamide (DHFP) was synthesized by addition, rearrangement, and intramolecular cyclization reactions. …”
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1553por Mohamadpour, Farzaneh“…The Knoevenagel-Michael cyclocondensation of barbituric acid/1,3-dimethylbarbituric acid, malononitrile, and arylaldehyde derivatives was used to construct a multicomponent green tandem method for the metal-free synthesis of pyrano[2,3-d]pyrimidine scaffolds. At room temperature in aqueous ethanol, photo-excited state functions generated from Na(2) eosin Y were employed as direct hydrogen atom transfer (HAT) catalysts by visible light mediated in the air atmosphere. …”
Publicado 2023
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1554por Crocetti, Letizia, Guerrini, Gabriella, Melani, Fabrizio, Vergelli, Claudia, Giovannoni, Maria Paola“…Taking into account this evidence and as a continuation of our study in the GABA(A) receptor modulators field, we designed and synthesized new compounds containing the thiophene ring with 4,5-dihydro-5-oxo-pyrazolo[1,5-a]thieno[2,3-c]pyrimidine and pyrazolo[1,5-a]thieno[2,3-c] pyrimidine scaffold. …”
Publicado 2023
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1555por Cotton, F. Albert, Murillo, Carlos A., Poplaukhin, Pavel V., Bhuvanesh, Nattamai, Tiekink, Edward R. T.“…The title complex, [Nb(C(7)H(12)N(3))(4)]PF(6), features chelating hpp anions (hpp is 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine) that define a distorted dodecahedral coordination geometry based on an N(8) donor set. …”
Publicado 2008
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1556
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1557“…In the title compound, C(24)H(22)N(2)O(4)S, the central pyrimidine ring is significantly puckered, assuming a conformation intermediate between a boat and a screw boat. …”
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1558“…The asymmetric unit contains two independent molecules, with essentially identical geometries and conformations. The dihydropyrimidine rings adopt a half-chair conformation. The dihedral angles between the benzene ring and the thiophene ring are 54.82 (8) and 58.72 (8)° in the two molecules. …”
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1559
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1560