Preparation, identification, and quantitative NMR determination of silyl derivatives of 6-aminopenicillanic acid, 7-amino-3-methyl-delta3-cephem-4-carboxylic acid, and 7-amino-3-acetoxymethyl-delta3-cephem-4-carboxylic acid.

abstract：:Trimethoprim undergoes thermally and photochemically catalyzed hydrolysis or oxidation to give rise to at least five products. The structures of these compounds were determined by physical methods and it was found that the resonance of C-5 in the 13C NMR spectrum is indicative of the substitution pattern of the result...

journal_title：Journal of pharmaceutical sciences

authors： Bergh JJ,Breytenbach JC,Wessels PL

更新日期：1989-04-01 00:00:00

abstract：:The aim of this work is to determine if a stability testing protocol based on the correlations between crystallization onset and relaxation time above the glass transition temperature (T(g)) can be used to predict the crystallization onsets in amorphous pharmaceutical systems well below their T(g). This procedure assu...

journal_title：Journal of pharmaceutical sciences

authors： Caron V,Bhugra C,Pikal MJ

更新日期：2010-09-01 00:00:00

abstract：:Statistical assessment of bioavailability and bioequivalence of drug products is generally carried out with a univariate analysis by independently comparing each relevant parameter [such as, area under the drug concentration curve (AUC) and peak drug concentration (Cmax)] of the test and reference products. The assump...

journal_title：Journal of pharmaceutical sciences

authors： Hsu HC,Lu HL,Chan KK

更新日期：1995-06-01 00:00:00

abstract：:Health interventions developed for wealthy nations are difficult to introduce in developing countries due to a lack of sufficient technological, financial, political, or infrastructural resources. Increasingly, however, product developers are creating new technologies that meet the needs of low-resource settings. Expe...

journal_title：Journal of pharmaceutical sciences

authors： Harner-Jay C,Sherris J

更新日期：2008-12-01 00:00:00

abstract：:Poly(D,L-lactide-co-glycolide, 50:50) samples of similar molecular weight were obtained from three commercial sources and were characterized by gel permeation chromatography, differential scanning calorimetry, X-ray powder diffraction, viscometry, and proton nuclear magnetic resonance spectroscopy. Pellets were prepar...

journal_title：Journal of pharmaceutical sciences

authors： Schmitt EA,Flanagan DR,Linhardt RJ

更新日期：1993-03-01 00:00:00

abstract：:An ethanol extract of the root of a Mexican variant of Cannabis sativa L.(marijuana) afforded, after partitioning and chromatography, the new spermidine alkaloid cannabisativine. ...

journal_title：Journal of pharmaceutical sciences

authors： Turner CE,Hsu MH,Knapp JE,Schiff PL Jr,Slatkin DJ

更新日期：1976-07-01 00:00:00

abstract：:The pharmacokinetics of valproic acid after oral administration of sustained-release formulations were studied in 12 healthy volunteers. The objective of the present study was to find an appropriate mathematical model to describe the complex drug intake process. The concentration of valproic acid in plasma was measure...

journal_title：Journal of pharmaceutical sciences

authors： Bressolle F,Gomeni R,Alric R,Royer-Morrot MJ,Necciari J

更新日期：1994-10-01 00:00:00

abstract：:This study describes the synthesis of a new generation of immunotoxins made by a noncovalent interaction between a monoclonal antibody derivatized with a dichlorotriazinic dye and the ribosomal inhibitor protein gelonin. The scheme of preparation has several advantages with respect to the traditional methods, which us...

journal_title：Journal of pharmaceutical sciences

authors： Dosio F,Brusa P,Delprino L,Grosa G,Ceruti M,Cattel L

更新日期：1994-02-01 00:00:00

abstract：:A method is presented for determining the equilibrium solubility of a drug in a solid polymer at or near room temperature, which represents a typical storage temperature. The method is based on a thermodynamic model to calculate the Gibbs energy change ΔG(SS) associated with forming a binary drug-polymer solid solutio...

journal_title：Journal of pharmaceutical sciences

authors： Bellantone RA,Patel P,Sandhu H,Choi DS,Singhal D,Chokshi H,Malick AW,Shah N

更新日期：2012-12-01 00:00:00

abstract：:2,2'-Anhydro-1-beta-D-arabinofuranosylcytosine (I) is a more potent and less toxic antineoplastic agent than is cytarabine (1-beta-D-arabinofuranosylcytosine) (II). The anhydronucleoside (I) was found to be readily transformed by hydrogen peroxide into 2,2'-anhydro-5-hydroxy-1-beta-D-arabinofuranosylcytosine (III) by ...

journal_title：Journal of pharmaceutical sciences

authors： Kikugawa K

更新日期：1975-03-01 00:00:00

abstract：:Lipids were extracted from human stratum corneum and the remaining corneocytes were reaggregated with different lyotropic liquid crystals. Water transport through the reaggregated stratum corneum was determined using a diffusion chamber according to Smith and Blank. The permeability constant for the reaggregated strat...

journal_title：Journal of pharmaceutical sciences

authors： Kayali I,Suhery T,Friberg SE,Simion FA,Rhein LD

更新日期：1991-05-01 00:00:00

abstract：:The chemical stability of the novel anticancer agent carzelesin in aqueous buffer/acetonitrile (1:1, v/v) mixtures has been investigated utilizing a stability-indicating reversed-phase high-performance liquid chromatographic assay. The degradation kinetics of carzelesin has been studied as a function of pH, buffer com...

journal_title：Journal of pharmaceutical sciences

authors： Vries JD,Doppenberg WG,Henrar RE,Bult A,Beijnen JH

更新日期：1996-11-01 00:00:00

abstract：:A series of N1-p-chlorophenyl-N5-alkylbiguanides were synthesized as potential inhibitors of dental plaque. Partition coefficients and pKa values were determined by standard methods. Biological activity was evaluated against Streptococcus mutans, a pure strain of plaque-forming bacteria. All compounds were compared to...

journal_title：Journal of pharmaceutical sciences

authors： Warner VD,Lynch DM,Ajemian RS

更新日期：1976-07-01 00:00:00

abstract：:Aggregation of therapeutic monoclonal antibodies has a potential risk of immunogenicity, requiring minimization of aggregate formation. We have developed a fitting formula for antibody aggregation at 40°C based on physicochemical parameters, including colloidal and conformational stabilities. An IgG1 monoclonal antibo...

journal_title：Journal of pharmaceutical sciences

authors： Oyama H,Koga H,Tadokoro T,Maenaka K,Shiota A,Yokoyama M,Noda M,Torisu T,Uchiyama S

更新日期：2020-01-01 00:00:00

abstract：:The complete pH-rate profile of the hydrolysis reaction of aspirin, requiring many experiments in the past, was obtained by a single variable-parameter kinetic experiment carried out by varying the hydrogen ion concentration. The experiment was carried out spectrophotometrically, reading automatically absorbance, pH, ...

journal_title：Journal of pharmaceutical sciences

authors： Alibrandi G,Coppolino S,Micali N,Villari A

更新日期：2001-03-01 00:00:00

abstract：:The effect of excipient, drug, and osmotic agent loaded in the inner core tablet on the time-controlled disintegration of compression-coated tablet prepared by direct compression with micronized ethylcellulose was investigated. The excipients [spray-dried lactose, hydroxypropyl methyl cellulose, sodium starch glycolat...

journal_title：Journal of pharmaceutical sciences

authors： Lin SY,Lin KH,Li MJ

更新日期：2002-09-01 00:00:00

abstract：:The direct photoisomerization of (E)-4-(1-imidazoylmethyl)-cinnamic acid (IMC), a thromboxane synthetase inhibitor, to its (Z)-isomer at pH 2.0 was decelerated by beta-cyclodextrin (beta-CyD) and heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM-beta-CyD). The photostationary composition [(Z)-isomer:IMC ratio] was shift...

journal_title：Journal of pharmaceutical sciences

authors： Hirayama F,Utsuki T,Uekama K,Yamasaki M,Harata K

更新日期：1992-08-01 00:00:00

abstract：:In this paper we describe the synthesis and characterization of magnetic microcapsules, intended for use in vivo, and which contain polyethyleneimine nucleophilic targets capable of trapping electrophilic carcinogens. The microcapsules, 15-50 microns in diameter, consist of a semipermeable cross-linked nylon membrane ...

journal_title：Journal of pharmaceutical sciences

authors： Povey AC,Bartsch H,Nixon JR,O'Neill IK

更新日期：1986-09-01 00:00:00

abstract：:Recent in vitro and in vivo studies have suggested transscleral iontophoresis as a means for non-invasive drug delivery to the eye. However, there remains a lack of information of the iontophoretic transport behavior of the sclera. The objective of the present study was to investigate the effects of permeant concentra...

journal_title：Journal of pharmaceutical sciences

authors： Li SK,Zhang Y,Zhu H,Higuchi WI,White HS

更新日期：2005-04-01 00:00:00

abstract：:Blood levels of intact chloroprocaine were determined using a GLC procedure capable of detecting as little as 10 ng of chloroprocaine/ml of blood. It was necessary to detective plasma cholinesterases in collected samples by adding echothiophate iodide to blood sampling tubes. An extraction procedure, followed by a TLC...

journal_title：Journal of pharmaceutical sciences

authors： O'Brien JE,Abbey V,Hinsvark O,Perel J,Finster M

更新日期：1979-01-01 00:00:00

abstract：:A sensitive (10 ng/mL) and specific high-performance liquid chromatographic (HPLC) assay, with electrochemical (EC) detection, for the geometric isomers of 3-hydroxy-N-(2-phenyl-2-(2-thienyl)ethenyl-5-(trifluoromethyl)benzo(b) thiophene-2-carboxamide in dog and human plasma has been developed. Both isomers strongly ab...

journal_title：Journal of pharmaceutical sciences

authors： Matuszewski BK,Kanovsky SM,Constanzer ML,Yeh KC,Bayne WF

更新日期：1988-10-01 00:00:00

abstract：:For particles to be useful medicinal aerosols, not only their aerodynamic diameter has to be on the order of a few micrometers but also they have to be chemically and physically stable. Manufacture of respirable particles is a technical challenge because as particles are reduced in size by conventional milling techniq...

journal_title：Journal of pharmaceutical sciences

authors： Lechuga-Ballesteros D,Charan C,Stults CL,Stevenson CL,Miller DP,Vehring R,Tep V,Kuo MC

更新日期：2008-01-01 00:00:00

abstract：:There is a need to evaluate the permeability of human ulcerated tissue and periulcer tissue in order to assess the possible treatment of such a localized pathological lesion with a topical therapy. In vitro percutaneous absorption studies were undertaken to evaluate an animal model that may mimic this clinical situati...

journal_title：Journal of pharmaceutical sciences

authors： Walker M,Hulme TA,Rippon MG,Walmsley RS,Gunnigle S,Lewin M,Winsey S

更新日期：1997-12-01 00:00:00

abstract：:The present study aimed to develop optimized quercetin (QT)-loaded self-nanoemulsifying drug delivery system (SNEDDS) that offers protective effect against liver damage. Solubility study of QT in different oils, surfactants, and cosurfactants was performed. Ternary phase mixtures of the selected components were constr...

journal_title：Journal of pharmaceutical sciences

authors： Ahmed OA,Badr-Eldin SM,Tawfik MK,Ahmed TA,El-Say KM,Badr JM

更新日期：2014-02-01 00:00:00

abstract：:A novel method was established for the preparation of Eudragit S, Eudragit L, and Eudispert high-viscosity (hv) hydrogel and xerogel preparations containing a medicinal component such as pentoxifylline (an agent that improves cerebral microcirculation). A significant correlation was found between the in vitro mean dis...

journal_title：Journal of pharmaceutical sciences

authors： Kim NS,Kawata M,Uchida T,Goto S

更新日期：1992-06-01 00:00:00

abstract：:A crude chloroform-soluble fraction of the ethanol extract of the leaves of Bursera klugii showed activity against two test systems, the P-388 lymphocytic leukemia (3PS) and the human epidermoid carcinoma of the nasopharynx (9KB). The PS activity was due to two constituents, sapelins A and B. ...

journal_title：Journal of pharmaceutical sciences

authors： Jolad SD,Wiedhopf RM,Cole JR

更新日期：1977-06-01 00:00:00

abstract：:Aqueous wet massing of stable anhydrous theophylline (A) with polyvinylpyrrolidone (PVP) resulted in its complete transformation to theophylline monohydrate (M). Drying at 45 degrees C, resulted in the formation of metastable anhydrous theophylline (A*) which then transformed to A. PVP, a known crystallization inhibit...

journal_title：Journal of pharmaceutical sciences

authors： Tantry JS,Tank J,Suryanarayanan R

更新日期：2007-05-01 00:00:00

abstract：:Angiogenesis, the sprouting of capillaries from preexisting ones, is essential for the sustained growth of solid tumors. In this study, we used SU5416, a hydrophobic molecule with potent tyrosine kinase inhibitor of type 2 receptor for vascular endothelial growth factor (VEGF), as PEGylated emulsion (SU5416-PE), and e...

journal_title：Journal of pharmaceutical sciences

authors： Ogawara K,Abe S,Un K,Yoshizawa Y,Kimura T,Higaki K

更新日期：2014-08-01 00:00:00

abstract：:A dual pH/redox responsive copper-glyglycine-prednisolone succinate-loaded nanoliposomal (NL) sludge was successfully synthesized and optimized using a Box-Behnken design of experiments. Preformulation design variables indicated that relative ratios of phospholipids, considerably influences NL size, thus altering the ...

journal_title：Journal of pharmaceutical sciences

authors： Mavuso S,Marimuthu T,Kumar P,Kondiah PPD,du Toit LC,Choonara YE,Pillay V

更新日期：2018-04-01 00:00:00

abstract：:Mixing Fungizone with a fat emulsion used for nutritional purpose (Intralipid or Lipofundin ) was reported to decrease Amphotericin B (AmB) toxicity in clinical use. In an effort to understand the reason for this phenomenon, spectral and morphological analyses were done for the Fungizone and Fungizone /Lipofundin admi...

journal_title：Journal of pharmaceutical sciences

authors： Egito ES,Araújo IB,Damasceno BP,Price JC

更新日期：2002-11-01 00:00:00