Ringold, Howard J.: search on Z-Library

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1

+742 pp. 15 × 23 cm. Price $25.00 Norman Applezweig, ,Steroid Drugs (1962) Director Norman Applezweig Associates, Consulting Biochemists, New York, N. Y. McGraw Hill Book Company, Inc.,Philadelphia XV.

Howard J. Ringold

Journal:

Year:

1963

Language:

english

File:

PDF, 118 KB

english, 1963

2

Enol dependent reactions of β,γ-unsaturated ketones, 10β-fluoro-17α-ethynyl-19-nortestosterone, a potent estrogen

Fumikazu Mukawa, Ralph I. Dorfman, Howard J. Ringold

Journal:

Year:

1963

Language:

english

File:

PDF, 430 KB

english, 1963

3

The effect of electron-withdrawing and electron-releasing substituents on the enzymic reduction of steroids

Ringold, Howard J., Ramachandran, S., Forchielli, Enrico

Journal:

Biochimica et Biophysica Acta (BBA) - General Subjects

Year:

1964

Language:

english

File:

PDF, 964 KB

english, 1964

4

A Biochemical Effect of Deuterium

RINGOLD, HOWARD J., BURSTEIN, SUMNER, DORFMAN, RALPH I.

Journal:

Year:

1961

File:

PDF, 251 KB

1961

5

Δ5 -3-Keto isomerases — specificity and inhibition studies in bovine adrenal homogenate fractions and distribution in rat tissues

Hans L. Krüskemper, Enrico Forchielli, Howard J. Ringold

Journal:

Year:

1964

Language:

english

File:

PDF, 794 KB

english, 1964

6

Antibody studies with the multiple enzymes of horse liver alcohol dehydrogenase I

Regina Pietruszko, Howard J. Ringold

Journal:

Biochemical and Biophysical Research Communications

Year:

1968

Language:

english

File:

PDF, 330 KB

english, 1968

7

Chemistry of Conjugate Anions and Enols. IV. The Kinetically Controlled Enolization of α,β-Unsaturated Ketons and the Nature of the Transition State

Malhotra, Sudarshan K., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1964

Language:

english

File:

PDF, 962 KB

english, 1964

8

STEROIDAL SAPOGENINS. XV. EXPERIMENTS IN THE HECOGENIN SERIES (PART 3). 1 CONVERSION TO CORTISONE

Djerassi, Carl, Ringold, Howard J., Rosenkranz, G.

Journal:

Journal of the American Chemical Society

Year:

1951

Language:

english

File:

PDF, 274 KB

english, 1951

9

Antibody studies with the multiple enzymes of horse liver alcohol dehydrogenase II

Regina Pietruszko, Howard J. Ringold, Nathan Kaplan, Johannes Everse

Journal:

Biochemical and Biophysical Research Communications

Year:

1968

Language:

english

File:

PDF, 215 KB

english, 1968

10

Stereochemistry and mechanism of the reduction of enedione systems by zinc and by lithium-ammonia

Pradhan, S. K., Subrahmanyam, G., Ringold, Howard J.

Journal:

Journal of Organic Chemistry

Year:

1967

Language:

english

File:

PDF, 583 KB

english, 1967

11

The Mechanism of the Bacterial C-1,2 Dehydrogenation of Steroids. III. Kinetics and Isotope Effects *

Jerussi, Robert, Ringold, Howard J.

Journal:

Year:

1965

Language:

english

File:

PDF, 1.16 MB

english, 1965

12

STEROIDS. XCIII. 1 INTRODUCTION OF THE CORTICAL HORMONE SIDE-CHAIN

Ringold, Howard J., Stork, Gilbert

Journal:

Journal of the American Chemical Society

Year:

1958

Language:

english

File:

PDF, 154 KB

english, 1958

13

Steroids. XLIII. 1 A Ten Step Conversion of Progesterone to Cortisone. The Differential Reduction of Pregnane-3,20-diones with Sodium Borohydride 2

Mancera, O., Ringold, Howard J., Djerassi, Carl, Rosenkranz, G., Sondheimer, Franz

Journal:

Journal of the American Chemical Society

Year:

1953

Language:

english

File:

PDF, 651 KB

english, 1953

14

Experimental Strategy for Delineation of the Enzyme Region Involved in Substrate Recognition

Howard J. Ringold, John M. H. Graves, Albert Clark and Thomas Bellas

Journal:

Proceedings of the National Academy of Sciences

Year:

1966

Language:

english

File:

PDF, 811 KB

english, 1966

15

Concerning the Steric Requirements for the Allylic 1,3-Spin-Spin Coupling of Protons

Wittstruck, Thomas A., Malhotra, Sudarshan K., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1963

Language:

english

File:

PDF, 308 KB

english, 1963

16

The steroid activity and multiplicity of crystalline horse liver alcohol dehydrogenase

Regina Pietruszko, Albert Clark, John M.H. Graves, Howard J. Ringold

Journal:

Biochemical and Biophysical Research Communications

Year:

1966

Language:

english

File:

PDF, 563 KB

english, 1966

17

Concerning the Steric Requirements for Allylic 1,3-Spin-Spin Fluorine-Proton Coupling

Wittstruck, Thomas A., Malhotra, Sudarshan K., Ringold, Howard J., Cross, Alexander D.

Journal:

Journal of the American Chemical Society

Year:

1963

Language:

english

File:

PDF, 291 KB

english, 1963

18

Contribution to the steric course of steroid reduction and dehydrogenation

Howard J. Ringold, Marcel Gut, Mika Hayano, Alan Turner

Journal:

Tetrahedron Letters

Year:

1962

Language:

english

File:

PDF, 145 KB

english, 1962

19

Proposed Catalytic Role for Histidine in Pyridine Nucleotide-linked Alcohol Dehydrogenases

RINGOLD, HOWARD J.

Journal:

Year:

1966

File:

PDF, 236 KB

1966

20

Deconjugation of α,β-unsaturated ketones

Howard J. Ringold, Sudarshan K. Malhotra

Journal:

Tetrahedron Letters

Year:

1962

Language:

english

File:

PDF, 192 KB

english, 1962

21

Steroidal Sapogenins. XIX. 1 Sodium Borohydride Reduction of 3-Acetoxy-Δ 3,5,7 -22-isospirostatriene and 3-Acetoxy-Δ 3,5,7,9(11) -22-isospirostatetraene

Ringold, Howard J., Rosenkranz, G., Djerassi, Carl

Journal:

Journal of the American Chemical Society

Year:

1952

Language:

english

File:

PDF, 296 KB

english, 1952

22

Conjugate Anion Formation and Alkylation of α,β-Unsaturated Ketones

Ringold, Howard J., Malhotra, Sudarshan K.

Journal:

Journal of the American Chemical Society

Year:

1962

Language:

english

File:

PDF, 247 KB

english, 1962

23

Some Chemical Transformations and Conformations in the Cycloheptadecanone Series 1

Burstein, Sumner H., Ringold, Howard J.

Journal:

Journal of Organic Chemistry

Year:

1963

Language:

english

File:

PDF, 560 KB

english, 1963

24

Chemistry of Conjugate Anions and Enols. VII. Rates of Formation and Equilibria of Enolate Anions 1,2

Subrahmanyam, G., Malhotra, Sudarshan K., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1966

Language:

english

File:

PDF, 293 KB

english, 1966

25

ANTI-ESTROGEN ASSAY OF NEUTRAL STEROIDS ADMINISTERED BY SUBCUTANEOUS INJECTION 12

DORFMAN, RALPH I., KINCL, FRED A., RINGOLD, HOWARD J.

Journal:

Year:

1961

Language:

english

File:

PDF, 602 KB

english, 1961

26

Adamantanone as a probe for the dimensions and characteristics of the substrate binding pocket of certain alcohol dehydrogenases

Howard J. Ringold, Thomas Bellas, Albert Clark

Journal:

Biochemical and Biophysical Research Communications

Year:

1967

Language:

english

File:

PDF, 324 KB

english, 1967

27

SYNTHESIS OF TROPONE

Dauben, Hyp J., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1951

Language:

english

File:

PDF, 142 KB

english, 1951

28

Kinetics of the Oxidation of Allyl Alcohols with Dichlorodicyanoquinone. Conformational and Isotope Effects

Burstein, Sumner H., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1964

Language:

english

File:

PDF, 956 KB

english, 1964

29

Steroidal Sapogenins. XXXVII. 1 Experiments in the Hecogenin Series. (Part 6). 2 Conversion to Cortisone

Djerassi, Carl, Ringold, Howard J., Rosenkranz, G.

Journal:

Journal of the American Chemical Society

Year:

1954

Language:

english

File:

PDF, 550 KB

english, 1954

30

Electronic control of enzymatic oxidation-reduction processes. The reduction of Δ4-3-ketosteroids to Δ4-3-ols by the 3α- and 3β-hydroxysteroid dehydrogenases of pseudomonas testosteroni

Howard J. Ringold, John Graves, Mika Hayano, Harold Lawrence Jr.

Journal:

Biochemical and Biophysical Research Communications

Year:

1963

Language:

english

File:

PDF, 278 KB

english, 1963

31

Steroidal Sapogenins. XX. 1a Synthesis and Reactions of the Epimeric Δ 5 -22-Isospirosten-3β,7-diols 1b

Ringold, Howard J., Rosenkranz, G., Djerassi, Carl

Journal:

Journal of the American Chemical Society

Year:

1952

Language:

english

File:

PDF, 390 KB

english, 1952

32

Steroidal Sapogenins. XIV. 1 Δ 4, 6 -22-Isospirostadien-3β-Ol and Δ 2, 4, 6 -Isospirostatriene

Romo, J., Ringold, Howard J., Rosenkranz, G., Djerassi, Carl

Journal:

Journal of Organic Chemistry

Year:

1951

Language:

english

File:

PDF, 442 KB

english, 1951

33

The Oral Thymolytic Activity of 6- and 9-Halo Corticoids and Related Steroids

Dorfman, Ralph I., Ringold, Howard J., Kincl, Fred A.

Journal:

Year:

1962

File:

PDF, 1.27 MB

1962

34

The Influence of Unsaturation and of Fluorine Substitution on Ketone-Alcohol Equilibrium Constants. A Measure od α,β-Unsaturated Ketone Resonance Energy and of Halogen Destabilization

Ringold, Howard J., Lawrence, Harold., Graves, J. M. H.

Journal:

Journal of the American Chemical Society

Year:

1964

Language:

english

File:

PDF, 380 KB

english, 1964

35

Chemistry of Conjugate Anions and Enols. III. Protonation

Malhotra, Sudarshan K., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1963

Language:

english

File:

PDF, 328 KB

english, 1963

36

Steroidal Sapogenins. XXV. 1 Experiments in the Hecogenin Series (Part 4). 2 Degradation of 22a-5α-Spirostane-3β,12β-diol-11-one 3

Martinez, H., Ringold, Howard J., Rosenkranz, G., Djerassi, Carl

Journal:

Journal of the American Chemical Society

Year:

1953

Language:

english

File:

PDF, 282 KB

english, 1953

37

Chemistry of conjugate anions and enols. VI. the reaction of dihalocarbene with enolate anions

T.D.J. D'Silva, Howard J. Ringold

Journal:

Tetrahedron Letters

Year:

1965

Language:

english

File:

PDF, 252 KB

english, 1965

38

The stereochemical course of enzymatic steroid 1,2-dehydrogenation

Mika Hayano, Howard J. Ringold, Vladimir Stefanovic, Marcel Gut, Ralph I. Dorfman

Journal:

Biochemical and Biophysical Research Communications

Year:

1961

Language:

english

File:

PDF, 302 KB

english, 1961

39

Synthesis of Cycloheptanone by a Nitromethane Condensation Sequence

Dauben, Hyp J., Ringold, Howard J., Wade, Robert H., Anderson, Arthur G.

Journal:

Journal of the American Chemical Society

Year:

1951

Language:

english

File:

PDF, 436 KB

english, 1951

40

Facilitated Alkaline Hydrolysis of Diol Monoesters 1

Ringold, Howard J., Burstein, Sumner H., Gut, Marcel

Journal:

Journal of Organic Chemistry

Year:

1963

Language:

english

File:

PDF, 305 KB

english, 1963

41

Stereochemical Aspects of the Substrate Specificity of Horse Liver Alcohol Dehydrogenase *

Graves, John M. H., Clark, Albert, Ringold, Howard J.

Journal:

Year:

1965

Language:

english

File:

PDF, 1.62 MB

english, 1965

42

Chemistry of Conjugate Anions and Enols. V. Stereochemistry, Kinetics, and Mechanism of the Acid- and Enzymatic-Catalyzed Isomerization of 5 -3-Keto Steroids 1,2

Malhotra, Sudarshan K., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1965

Language:

english

File:

PDF, 1.08 MB

english, 1965

43

ANTI-ESTROGEN ASSAY OF NEUTRAL STEROIDS ADMINISTERED BY GAVAGE 12

DORFMAN, RALPH I., KINCL, FRED A., RINGOLD, HOWARD J.

Journal:

Year:

1961

Language:

english

File:

PDF, 503 KB

english, 1961

44

N.M.R. methyl shifts and conformational equilibria of protonated methylcyclohexanones

T.D.J. D'Silva, Howard J. Ringold

Journal:

Tetrahedron Letters

Year:

1967

Language:

english

File:

PDF, 277 KB

english, 1967

45

10.1021/ja01634a050

Dauben, Hyp J., Loken, Bjarte, Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1954

Language:

english

File:

PDF, 715 KB

english, 1954

46

Chromic acid oxidation of allyl alcohols

Burstein, Sumner H., Ringold, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1967

Language:

english

File:

PDF, 506 KB

english, 1967

47

The Dehydrogenation of Steroidal Δ 3,5 -Enol Ethers with Dichlorodicyanoquinone (DDQ) 1

Pradhan, S. K., Ringold, Howard J.

Journal:

Journal of Organic Chemistry

Year:

1964

Language:

english

File:

PDF, 571 KB

english, 1964

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