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31Prusis P.; Dambrova M.; Andrianov V.; Rozhkov E.; Semenikhina V.; Piskunova I.; Ongwae E.; Lundstedt T.; Kalvinsh I.; *Wikberg J.E.S. Synthesis and quantitative structure-activity relationship of hydrazones of N-amino-N′-hydroxyguanidine as electron acceptors for xanthine oxidase. J. Med. Chem. 2004, 47(12), 3105-3110.      

32Zicane D.; Tetere Z.; Rāviņa I.; Petrova M. Synthesis of derivatives of 1,3,4-oxadiazoles based on monohydrazides of 2-aryl-4-methyl-4-cyclohexen-1,2-dicarboxylic acids. Chem. Heterocycl. Compd. 2004, 40(7), 916-918.      

33Tonkikh N.N.; Strakovs A.; Petrova M.V. 10-Aryl-7,7-dimethyl-5,6,7,8,9,10-hexahydro-11H-pyrido[3,2-b][1,4] benzodiazepin-9-ones. Chem. Heterocycl. Compd. 2004, 40(7), 944-948.      

34Tonkikh N.N.; Strakovs A.; Rizhanova K.V.; Petrova M.V. 11-Aryl-3,3-dimethyl-7- and 7,8-substituted 1,2,3,4,10,11-hexahydro-5H- dibenzo[b,e]-1,4-diazepin-1-ones. Chem. Heterocycl. Compd. 2004, 40(7), 949-955.      

35Strakova I.; Petrova M.; Strakovs A. Reactions of 2-amino-4-methyl-6-(2-pyridyl)- and 2-amino-4-methyl-6-phenyl- 7,8-dihydroindazolo[4,5-d]thiazoles with aldehydes. Chem. Heterocycl. Compd. 2004, 40(7), 938-943.      

36Zablotskaya A.E.; Segal I.D.; Lukevics E. Unexpected O-methylation of N-(2-hydroxyethyl)-1,2,3,4-tetrahydroquinoline and -1,2,3,4-tetrahydroisoquinoline in silylalkylation by trimethylchloromethylsilane under phase-transfer catalysis conditions. Chem. Heterocycl. Compd. 2004, 40(7), 958-959.      

37Sobolev A.; Zhalubovskis R.; Franssen M.C.R.; Vigante B.; Chekavichus B.; Duburs G.; De Groot Ae. Candida rugosa lipase-catalyzed kinetic resolution of 3-(isobutyryloxy) methyl 4-[2-(difluoromethoxy)phenyl]-2-methyl-5,5-dioxo-1,4- dihydrobenzothieno[3,2-b]pyridine-3-carboxylate. Chem. Heterocycl. Compd. 2004, 40(7), 931-937.      

38Sobolev A.; *Franssen M.C.R.; Duburs G.; De Groot A.E. Chemoenzymatic synthesis of enantiopure 1,4-dihydropyridine derivatives. Biocatal. Biotransform. 2004, 22(4), 231-252.      

39Kalme Z.A.; Zhalubovskis R.A.; Shmidlers A.; Celmiņš J.; Duburs G. Synthesis of 6-bromomethyl-substituted derivatives of pyridin-2(1H)-ones and their reaction with nucleophiles. Chem. Heterocycl. Compd. 2004, 40(7), 862-868.      

40Briede J.; Stivrina M.; Stoldere D.; Bisenieks E.; Uldriķis J.; Poikans J.; Makarova N.; *Duburs G. Effect of new and known 1,4-dihydropyridine derivatives on blood glucose levels in normal and streptozotocin-induced diabetic rats. Cell Biochem. Funct. 2004, 22(4), 219-224.      

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