نتایج جستجو برای: 4 dihydropyrimidine
تعداد نتایج: 1304168 فیلتر نتایج به سال:
In the title compound, C(18)H(22)N(2)O(3)S, the pyrimidine ring is not planar. It adopts a half-chair conformation The crystal structure is characterized by classical N-H⋯O and C-H⋯O inter- and intra-molecular hydrogen bonds, respectively. The title compound exhibits a wide spectrum of biological activities.
Background and purpose: There is an increasing rate of drug resistance to azole among Candida species, so, finding new compounds that are effective in laboratory conditions, such as 3,4-dihydropyrimidine derivatives are important. The purpose of this study was to evaluate the antifungal sensitivity of 3,4-di-hydropyrimidine-1- (H2) -L- H1-pyrrole derivatives in Candida isolates. Materials and ...
Numerical integration schemes based upon the Shardlow-splitting algorithm (SSA) are presented for dissipative particle dynamics (DPD) approaches at various fixed conditions, including a constant-enthalpy (DPD-H) method that is developed by combining the equations-of-motion for a barostat with the equations-of-motion for the constant-energy (DPD-E) method. The DPD-H variant is developed for both...
Multifocal inflammatory leukoencephalopathy (MIL) is a cerebral demyelinating syndrome that develops after chemotherapy with 5-fluorouracil (5-FU) and levamisole. The authors report a patient who developed MIL after 5-FU administration not in association with levamisole. She was subsequently diagnosed with partial deficiency of dihydropyrimidine dehydrogenase, an enzyme necessary for 5-FU catab...
We report herein the synthesis of a new biologically active 3,4-dihydropyrimidin-2(1H)-thione derivative (4) from 9-phenanthrenecarboxaldehyde, thiourea, and methyl acetoacetate by Biginelli reaction. The structure synthesized compound was investigated NMR spectroscopy, mass spectrometry, elemental analysis. Moreover, to gain insight into conformation crystal packing, novel dihydropyrimidine al...
Objective: To analyze the impact of mRNA expression of oral fluoropyrimidine (S-1) metabolism (thymidylate synthase, dihydropyrimidine dehydrogenase, thymidine phosphorylase, and orotate phosphoribosyltransferase [OPRT]), on treatment outcomes in locally advanced gastric cancer patients receiving preoperative S-1 combined with oxaliplatin chemotherapy. Methods: Preoperative stage III gastric ca...
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