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1

Chlorination of 2,6-dimethyl-3,5-dicarbomethoxy-4-(2′-difluoromethoxyphenyl)-1,4-dihydropyridine (phoridone)

I. P. Skrastin'sh, V. V. Kastron, É. É. Liepin'sh, I. B. Mazheika, R. O. Vitolinya, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1990

Language:

english

File:

PDF, 251 KB

english, 1990

2

Bromination of 2,6-dimethyl-3,5-dimethoxycarbonyl-4-(2′-difluoromethoxyphenyl)-1,4-dihydropyridine (foridone)

I. P. Skarstin'sh, V. V. Kastron, G. Ya. Dubur, I. B. Mazheika, É. É. Liepin'sh

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 410 KB

english, 1989

3

Synthesis of 2-methyl-3-nitro-4-phenyl-1,4-dihydroquinoline

B. A. Vigante, Ya. Ya. Ozols, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 50 KB

english, 1989

4

Sulfonation of 2,6-dimethyl-3,5-dimethoxycarbonyl-4-2-difluoromethoxyphenyl)-1,4-dihydropyridine (phoridone)

É. É. Liepin'sh, I. P. Skrastin'sh, V. V. Kastron, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 147 KB

english, 1989

5

1,4-Dihydropyridines containing sulfur (review)

Ya. Ozols, B. Vigante, G. Duburs

Journal:

Chemistry of Heterocyclic Compounds

Year:

1994

Language:

english

File:

PDF, 1.05 MB

english, 1994

6

3-Amino-2-carbamoyl-4,6-diphenyl-4,5- and -4,7-dihydrothieno-[2,3-b]pyridines

A. A. Krauze, é. é. Liepin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1987

Language:

english

File:

PDF, 85 KB

english, 1987

7

Synthesis and pharmacological activity of 4-(2-difluoromethoxyphenyl)-1,4-dihydropyridines

V. V. Kastron, G. Ya. Dubur, R. O. Vitolin', I. P. Skrastin'sh, A. A. Kimenis

Journal:

Pharmaceutical Chemistry Journal

Year:

1985

Language:

english

File:

PDF, 406 KB

english, 1985

8

Synthesis and pharmacological activity of 4-aryl-l,4-dihydropyridines

V. V. Kastron, G. Ya. Dubur, R. O. Vitolin', A. A. Kimenis, M. Ya. Selga, N. V. Kondratenko, L. M. Yagupol'skii, D. Ya. Tirzite, Yu. A. Fialkov, S. V. Shelezhenko

Journal:

Pharmaceutical Chemistry Journal

Year:

1982

Language:

english

File:

PDF, 581 KB

english, 1982

9

ChemInform Abstract: Sulfonation of 2,6-Dimethyl-3,5-dimethoxycarbonyl-4-(2-difluoromethoxyphenyl)-1,4-dihydropyridine (Foridon).

LIEPIN'SH, E. E., SKRASTIN'SH, I. P., KASTRON, V. V., DUBUR, G. YA.

Journal:

Year:

1990

File:

PDF, 95 KB

1990

10

ChemInform Abstract: Synthesis of 1,4-Dihydropyridine Derivatives Containing Hydroxy-, Alkoxy- or Dimethylaminophenyl Substituents at the 4-Position, Their Antioxidant Activity and Binding to Phospholipid Membranes.

M. PLOTNIETSE, G. TIRZITIS, YA. ULDRIKIS, ZH. KORONOVA, D. TIRZITE, N. MAKAROVA, G. DUBURS

Journal:

Year:

1997

File:

PDF, 29 KB

1997

11

ChemInform Abstract: Reduction of 3-Substituted 2-Methylquinolines with Sodium Tetrahydroborate.

A. SOBOLEV, B. VIGANTE, YA. OZOLS, G. DUBURS

Journal:

Year:

1997

File:

PDF, 30 KB

1997

12

ChemInform Abstract: Electrochemical Reduction of 4-Nitrophenyl-1,2- (II) and -1,4- dihydropyridines (I) and ESR Spectra of the Formed Free Radicals.

L. BAUMANE, R. GAVAR, YA. STRADYN', G. DUBUR

Journal:

Year:

1997

File:

PDF, 27 KB

1997

13

ChemInform Abstract: Free Radicals in the Electrochemical Reduction of 3,5-Dinitro-1,2- dihydropyridine Derivatives (I).

YA. STRADYN', R. GAVAR, L. BAUMANE, B. VIGANTE, G. DUBUR

Journal:

Year:

1997

File:

PDF, 26 KB

1997

14

ChemInform Abstract: Cation Radicals Formed by Electrochemical Oxidation of 1,2,6-Trimethyl-3,5-diacetyl-1,2-dihydropyridines

YA. STRADYN', R. GAVARS, L. BAUMANE, G. DUBURS

Journal:

Year:

1997

File:

PDF, 25 KB

1997

15

ChemInform Abstract: A New Method for the Preparation of 2,6-Diazabicyclo[2.2.2]octane-3,5-diones.

R. A. ZHALUBOVSKIS, Z. A. KALME, G. YA. DUBURS

Journal:

Year:

1998

File:

PDF, 30 KB

1998

16

ChemInform Abstract: Derivatives of Octahydropyrrolo[4,3,2-m,n]acridine. Part 5. Alkylation of 1-Methyl- and 1-Aryl-4,4,8,8-tetramethyl-2,3,4,5,7,8,9,10-octahydropyrrolo [4,3,2-m,n]acridin-10-ones.

YA. R. ULDRIKIS, E. A. BISENIEKS, G. YA. DUBURS

Journal:

Year:

1998

File:

PDF, 34 KB

1998

17

ChemInform Abstract: Hexahydroisoquinolones-8 Containing Electron Acceptor Substituents in Position 4.

Ya. Ozols, B. Vigante, L. Baumane, A. Mishnev, I. Turovskis, G. Duburs, J. Stradins

Journal:

Year:

1999

File:

PDF, 32 KB

1999

18

ChemInform Abstract: Synthesis, Antiradical and Antioxidant Activity of Phoridone Analogues (IV).

D. Ya. Tirzite, Zh. V. Khyuvonen, A. G. Shmidlers, G. D. Tirzitis, G. Ya. Duburs

Journal:

Year:

2000

File:

PDF, 26 KB

2000

19

Synthesis and alkylation of 4,6-diphenyl-3-thiocarbamoyl-3,4,5,6-tetrahydropyridine-2(1H)-one and 4,6-diphenyl-3-thiocarbamoyl-3,4-dihydropyridine-2(1H)-one

A. A. Krauze, é. é. Liepin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 613 KB

english, 1989

20

Bromination of 1-substituted-3,5-dicarbalkoxy-2,6-dimethyl-1,4-dihydropyridines

B. S. Chekavichus, A. é. Sausin'sh, I. P. Skrastin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 126 KB

english, 1989

21

Formation of 5-oxoindeno[1,2-b]pyran derivatives in cyclization of 1,5-diketones of the indian-1,3-dione series

V. K. Lusis, É. É. Liepin'sh, D. Kh. Mutsenietse, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 486 KB

english, 1988

22

Ethyl esters of 1,4-dihydropyridine-3,5-dicarbothionic acids

B. A. Vigante, Ya. Ya. Ozols, B. S. Chekavichus, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 548 KB

english, 1988

23

Synthesis and electrochemical oxidation of 1-aryl-3,5-diethoxycarbonyl-2,6-unsubstituted 1,4-dihydropyridines

B. S. Chekavichus, A. é Sausin'sh, V. P. Kadysh, G. Ya. Dubur, Ya. P. Stradyn'

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 359 KB

english, 1991

24

Formation of 1-aryl-2-chloromethylene-1,2,3,4-tetrahydropyridines and isomerization to 1,4-dihydropyridines

B. S. Chekavichus, I. S. Birgele, A. É. Sausin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 104 KB

english, 1992

25

Synthesis of phenyl-substituted derivatives of decahydrophenanthridine-1, 7-dione and hexahydro-8-isoquinolone

Ya. Ya. Ozols, A. N. Pyrko, B. A. Vigante, R. R. Dubure, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 382 KB

english, 1992

26

Fluorescence of 3,5-diethoxycarbonyl-1,4-dihydropyridine derivatives and their anions

A. K. Deme, V. K. Lusis, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 387 KB

english, 1988

27

4,6-Diaryl-3-thiocarbamoyl-3,4-dihydropyridin-2(1H)-ones

A. A. Krauze, é. é. Liepin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1987

Language:

english

File:

PDF, 79 KB

english, 1987

28

1,4-Dihydropyridine-3,5-dicarbothionic acid S-esters

B. A. Vigante, Ya. Ya. Ozols, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 472 KB

english, 1991

29

Octahydropyrrolo[4,3,2-m,n]acridine derivatives. 2. 1-Aryl-4,4,8,8-tetramethyl-2,3,4,5,7,8,9,10-octahydropyrrolo[4,3,2-m,n]-acridin-10-ones and intermediates in their synthesis

E. A. Bisenieks, N. V. Makarova, Ya. R. Uldrikis, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 581 KB

english, 1988

30

Synthesis and properties of some derivatives of 2-thionoindeno [1,2-d]-pyrimidine and indeno [1,2-d] [3,1] thiazine

A. Z. Zandersons, V. K. Lusis, é. é. Liepin'sh, D. Kh. Mutsenietse, E. L. Khanina, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 502 KB

english, 1988

31

New method for obtaining 3-cyano-1,4-dihydropyridine-2(3H)-thiones

A. A. Krauze, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1988

Language:

english

File:

PDF, 63 KB

english, 1988

32

Alkylation and reductive dethionation of 2-thioxo- and 1,2,3,4-tetrahydropyrimidine-5-carboxylic acid derivatives

E. L. Khanina, R. M. Zolotoyabko, D. Kh. Mutsenietse, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 507 KB

english, 1989

33

Free radicals in electrochemical reduction of 3,5-dicarbethoxy-1,4-dihydropyridines with nitrophenyl groups in positions 2, 4, and 6

L. Kh. Baumane, Ya. P. Stradyn', R. A. Gavar, B. S. Chekavichus, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 602 KB

english, 1991

34

Infrared absorption of 4,5-dihydroindeno[1,2-b]pyridines

B. A. Vigante, Ya. Ya. Ozols, S. P. Valtere, R. R. Dubure, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 249 KB

english, 1989

35

Bromination of 4-aryl-3,5-dialkoxycarbonyl-2,6-dimethyl-1,4-dihydropyridines

I. P. Skrastin'sh, V. V. Kastron, B. S. Chekavichus, A. é. Sausin'sh, R. M. Zolotoyabko, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 404 KB

english, 1991

36

Molecular crystal structure and chemical properties of 4-phenyl-3,5-diethoxycarbonyl-1,2,6-trimethyl-1,2-dihydropyridine

M. F. Bundule, A. F. Mishnev, V. K. Lusis, D. Kh. Mutsenietse, A. Z. Zandersons, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 338 KB

english, 1991

37

Bromination of amides of 2,6-dimethyl-1,4-dihydropyridine-5-carboxylic acids

I. P. Skrastin'sh, V. V. Kastron, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 75 KB

english, 1991

38

Equilibrium NH-acidity of 1,4-dihydropyridines and 4,5-dihydroindeno[1,2-b]pyridines

B. A. Vigante, M. I. Terekhova, Ya. Ya. Ozols, E. S. Petrov, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 327 KB

english, 1989

39

13C-NMR spectra of substituted 1,4-dihydropyridines

é. é. Liepin'sh, R. M. Zolotoyabko, B. S. Chekavichus, A. é. Sausin', V. K. Lusis, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1989

Language:

english

File:

PDF, 431 KB

english, 1989

40

Reactions of N-chlorosuccinimide with 4-phenyl-1,4-dihydropyridines

I. P. Skrastin'sh, E. E. Liepin'sh, V. V. Kastron, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1990

Language:

english

File:

PDF, 295 KB

english, 1990

41

Synthesis and properties of hydrogenated 2-alkylthio-5-oxo-3-cyanoindeno [1,2-b]-pyridines

A. A. Krauze, É. É. Liepin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1990

Language:

english

File:

PDF, 379 KB

english, 1990

42

Synthesis of decahydrophenanthridine-1,7-dione and hexahydroisoquinol-8-one derivatives in the reaction of 2-acetyl-2-cyclohexene-1-ones with conjugated enaminocarbonyl compounds

Ya. Ya. Ozols, A. N. Pyrko, F. A. Lakhvich, B. A. Vigante, R. R. Dubure, G. Ya. Dubur, A. A. Akhrem

Journal:

Chemistry of Heterocyclic Compounds

Year:

1990

Language:

english

File:

PDF, 445 KB

english, 1990

43

Reduction of 2,3,4-substituted quinolines with sodium borohydride

B. A. Vigante, Ya. Ya. Ozols, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 497 KB

english, 1991

44

Synthesis of 4-aryl-3-cyano-1,2,5,7-tetrahydrofuro[3,4-b]pyridine-2,5-diones

Z. A. Kalme, Yu. É. Pelcher, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 96 KB

english, 1991

45

Synthesis and properties of 6-methyl-4-(m-nitrophenyl)-3-cyanopyridin-2(1H)-ones, the corresponding pyridine-2(1H)-thiones, and their hydrogenated analogs

A. A. Krauze, H. -I. Ensch, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1991

Language:

english

File:

PDF, 522 KB

english, 1991

46

2-Aryl-3,5-dinitro-1,2-dihydropyridines

B. Vigante, Ya. Ozols, G. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1993

Language:

english

File:

PDF, 478 KB

english, 1993

47

Some substitution and heterocyclization reactions based on 1,4-dihydropyridines

I. P. Skrastin'sh, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 595 KB

english, 1992

48

Synthesis of 3-(N-R)carbamoyl-5-(pyrid-4′-yl)pyridine-2(1H)-thiones and their derivatives

A. A. Krause, A. Rumler, F. Hagen, H. J. Jansch, I. G. Shturm, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 307 KB

english, 1992

49

Reactions of nucleophilic substitution of 4-aryl-5-carbomethoxy-6-methyl-2-chloro-3-cyanopyridines

Z. A. Kalme, B. Roloff, Yu. E. Pelcher, Yu. Yu. Popelis, F. Khagen, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 332 KB

english, 1992

50

Electrochemical conversions of 5-oxo-1,4-dihydroindeno[1,2-b]pyridine derivatives

V. P. Kadysh, Ya. P. Stradyn', Ya. R. Uldrikis, G. Ya. Dubur

Journal:

Chemistry of Heterocyclic Compounds

Year:

1992

Language:

english

File:

PDF, 394 KB

english, 1992