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Duelfer T, Gala D. A short synthesis and its application to the preparation of radio labelled leukotriene inhibitor Sch 37224. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580290606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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2
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Gala D, DiBenedetto D, Gloor G, Jenkins J, Kugelman M, Maloney D, Miller A. Preparation of Guanine PDE Inhibitors: Development of the Common Synthetic Route Strategy. A Case Study. Org Process Res Dev 2004. [DOI: 10.1021/op030212r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. Gala
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. DiBenedetto
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - G. Gloor
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - J. Jenkins
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - M. Kugelman
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. Maloney
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - A. Miller
- Synthetic Chemistry-Chemical Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
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Gala D, Steinman M, Jaret RS. Tetrahydropyran as an efficient alcohol protecting group for the synthesis of penems: synthesis of Sch 34343. J Org Chem 2002. [DOI: 10.1021/jo00373a033] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Renton P, Shen L, Eckert J, Lee GM, Gala D, Chen G, Pramanik B, Schumacher D. An Intramolecular Silyl Transfer from the Carboxylate to the Hydroxyl Group in Sodium 4-Hydroxybutyrate and Its Application to the Synthesis of Injectable Antifungal Posaconazole Derivative, Sch 59884. Org Process Res Dev 2001. [DOI: 10.1021/op010230d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Renton
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - L. Shen
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - J. Eckert
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - G. M. Lee
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. Gala
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - G. Chen
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - B. Pramanik
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. Schumacher
- Chemical Process Research and Development, Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
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Cerami J, Gala D, Hou D, Kalliney S, Mas JL, Nyce P, Peer L, Wu G. Dilevalol via Resin-Mediated Epimerization: A Case Study. Reaction Mechanism to Reactor Design to a Viable Process. Org Process Res Dev 2000. [DOI: 10.1021/op990185y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Cerami
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. Gala
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - D. Hou
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - S. Kalliney
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - J. L. Mas
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - P. Nyce
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - L. Peer
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
| | - G. Wu
- Schering-Plough Research Institute, 1011 Morris Avenue, Union, New Jersey 07083, U.S.A
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Kalke S, Shah BV, Nair KG, Gala D, Sood OP, Bagati A. Clinical trial of benidipine in mild to moderate hypertension. J Assoc Physicians India 1999; 47:195-7. [PMID: 10999089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Thirty four patients with mild to moderate hypertension, were put on benidipine 4 mg/day after two weeks of placebo therapy. Twenty five patients completed the trial successfully for 4 mg benidipine. The blood pressure of 20 patients was controlled with benidipine 4 mg/day (effective rate 80%). Five patients with unsatisfactory control on 4 mg/day benidipine were put on 8 mg/day. Four of them were controlled and one was considered as failure (effective rate 80%). Most of the patients tolerated the drug well. Three patients had mild side effects like headache and heaviness in the head. One of them also had puffiness of face and body (on benidipine 8 mg/day) and was withdrawn from the study. One patient had mild constipation. We conclude that benidipine is well tolerated in the dose of 4-8 mg/day and is an effective antihypertensive agent for treatment of patients with mild to moderate hypertension.
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Affiliation(s)
- S Kalke
- PD Hinduja National Hospital and Medical Research Centre, Mumbai
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Affiliation(s)
- D. Gala
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033
| | - A. Stamford
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033
| | - J. Jenkins
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033
| | - M. Kugelman
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033
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Gala D, DiBenedetto D, Günter F, Kugelman M, Maloney D, Cordero M, Mergelsberg I. A Practical Synthesis of “Metabolite A1” (AAMU) of Caffeine. Org Process Res Dev 1997. [DOI: 10.1021/op960010d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. Gala
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - D. DiBenedetto
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - F. Günter
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - M. Kugelman
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - D. Maloney
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - M. Cordero
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
| | - I. Mergelsberg
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07003, and Werthenstein Chemie, CH-6105, Schachen, Switzerland
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Abstract
Alpha-Hydroxyaryl ketones such as 2-hydroxypropiophenone and 1-(2,4-difluorophenyl)-2-hydroxy-1-propanone, the key intermediates in the preparation of antifungal agents, decompose into oxidized, rearranged, and condensed products. These products were isolated and characterized. The possible mechanisms for the formation of the products are discussed.
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Affiliation(s)
- D Gala
- Schering Plough Research Institute, Bloomfield, NJ 07003
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Gala D, Chiu J, Ganguly A, Girijavallabhan V, Jaret R, Jenkins J, McCombie S, Nyce P, Rosenhouse S, Steinman M. A practical conversion of an azetidinone to penem: Synthesis of Sch 34343. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)90781-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nyce PL, Gala D, Steinman M. An Efficient Syntesis of 1,8-Naphthyridin-2(1H)-ones: Synthesis of Leukotriene Inhibitor SCH 37224. SYNTHESIS-STUTTGART 1991. [DOI: 10.1055/s-1991-26519] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Blythin D, Gala D. Pirodomast < Prop INN >. DRUG FUTURE 1991. [DOI: 10.1358/dof.1991.016.12.158316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kugelman M, Gala D, Jaret RS, Nyce PL, McPhail AT. Synthesis of Azetidinones from L-Threonine: Formation of Unusually Stable Bicyclic Hemiketals andcis-Azetidinones. Synlett 1990. [DOI: 10.1055/s-1990-21119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Reichman M, Dirksen R, Abood LG, Gala D. Effects of the affinity ligands 14-beta-chloroacetylnaltrexone and 14-beta-bromoacetamidomorphine on [3H]-dihydromorphine binding sites in rat brain. Biochem Pharmacol 1986; 35:3995-8. [PMID: 3022745 DOI: 10.1016/0006-2952(86)90017-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The aim of the present study was to examine the inhibitory effects in vitro of the affinity ligands 14-beta-chloroacetylnaltrexone (CAN) and 14-beta-bromoacetamidomorphine (BAM) to characterize the pharmacological specificity of the ligands for high and low affinity opioid binding sites. Rat brain membranes were incubated with 2.0 microM BAM or CAN, or their parent compounds (morphine and naltrexone, respectively) at 37 degrees for 45 min, and the membranes were washed extensively to remove the unbound ligand. The specific binding of 0.3 nM [3H]dihydromorphine ([3H]DHM) was reduced 32 +/- 7% in membranes treated with CAN and BAM, whereas specific binding in preparations treated with morphine and naltrexone was not significantly different from controls. An increased affinity of BAM and CAN relative to morphine and naltrexone could not account for the observed irreversible inhibition, since the relative affinity of CAN was similar to that of naltrexone and that of BAM was 10-fold less active than morphine. Saturation binding assays revealed that the affinity ligands selectively abolished a high affinity binding site (Kd = 0.3 nM, Bmax 95 fmoles/mg protein), which comprised approximately one-third of the total number of sites. The affinity of the remaining site (Kd = 4.0 nM) was not altered significantly. The results indicate that the inhibition caused by the affinity ligands is irreversible and represents inactivation of high affinity opioid binding sites in a relatively selective manner.
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Gala D, Kreilick RW, Hoss W, Matchett S. Nicotine-induced membrane perturbation of intact human granulocytes spin-labeled with 5-doxylstearic acid. Correlation with chemotaxis. Biochim Biophys Acta 1984; 778:503-10. [PMID: 6095910 DOI: 10.1016/0005-2736(84)90400-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The effects of nicotine on intact human granulocytes were examined, using 5-doxylstearic acid as a spin probe. At micromolar concentrations, (-)-nitocine produces a membrane perturbation in granulocytes not observable with oriented lipid bilayers. The effect, which is stereoselective for the (-)-isomer, occurs at concentrations of nicotine that bind to noncholinergic nicotine receptors on granulocytes and which are present in the blood after smoking. At comparable concentrations, (-)-nicotine modulates granulocyte chemotaxis towards a chemotactic peptide in a stereospecific and dose-dependent manner. Cotinine, the major metabolite of nicotine, does not bind to the receptor, does not produce the membrane perturbation observed with nicotine, and has no effect on chemotaxis. These results suggest that (-)-nicotine present in the blood after smoking binds to a receptor on granulocytes, perturbs granulocyte membranes and modulates chemotaxis.
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Abstract
We have synthesized and characterized a series of spin labeled aliphatic acids with variable chain lengths between the nitroxide radicals and the carboxylic group. These molecules should be of general utility in labeling a variety of substrates which can react with the free carboxylic acid group. Variable temperature esr studies have been conducted with some of these molecules to characterize molecular motion as a function of solvent viscosity.
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Bidlack JM, Abood LG, Munemitsu SM, Archer S, Gala D, Kreilick RW. Affinity labeling and purification of the opiate receptor from rat brain. Adv Biochem Psychopharmacol 1982; 33:301-309. [PMID: 6289627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Affinity labeling of the opiate receptor has been performed on neural membranes from rat brain utilizing[125I]-14-bromoacetamidomorphine, an opiate agonist, and [125I]-14-chloracetylmorphine, an antagonist. With the use of SDS gel electrophoresis it could be shown that the agonist labeled three proteins with molecular weights of 43,000, 35,000 and 23,000, whereas the antagonist only labeled the 23,000 component. The preferential labeling of the 23,000 protein by the antagonist suggests that this component may be a primary recognition site for opiate antagonists. Calcium was stimulatory to the affinity labeling of all three proteins while sodium was inhibitory. With the use of affinity columns prepared by conjugating either ligand to omega-aminohexyl Sepharose, a receptor complex was obtained consisting all three proteins. Stereospecific opiate binding was demonstrable in the complex prepared from either column.
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