Chemical constituents of malagasy liverworts, part V: prenyl bibenzyls and clerodane diterpenoids with nitric oxide inhibitory activity from Radula appressa and Thysananthus spathulistipus.

abstract：:We used near infrared (NIR) spectroscopy to evaluate the degree of mixing of blended dry syrup (DS) products whose particle sizes are not specified in the Revised 16th Edition of the Japanese Pharmacopoeia, and also evaluated the degree of mixing when powder products or fine granule products were added to DS products....

journal_title：Chemical & pharmaceutical bulletin

authors： Yamamoto Y,Suzuki T,Matsumoto M,Ohtani M,Hayano S,Fukami T,Tomono K

更新日期：2012-01-01 00:00:00

abstract：:Isoliquiritigenin, glabridin, licoarylcoumarin and licoricidin were identified as strong inhibitors of adenosine 3',5'-cyclic monophosphate (cAMP) phosphodiesterase in waste materials which were obtained during the industrial extraction of glycyrrhizin from licorice roots. The structure-activity relationships of 12 fl...

journal_title：Chemical & pharmaceutical bulletin

authors： Kusano A,Nikaido T,Kuge T,Ohmoto T,Delle Monache G,Botta B,Botta M,Saitoh T

更新日期：1991-04-01 00:00:00

abstract：:A novel macrocyclic diterpene, jatrophenone, has been isolated from the whole plant of Jatropha gossypifolia. The structure of the compound was established by detailed studies of its one- and two-dimensional (1D and 2D) NMR spectra. The compound possesses significant antibacterial activity. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Ravindranath N,Venkataiah B,Ramesh C,Jayaprakash P,Das B

更新日期：2003-07-01 00:00:00

abstract：:Colon-specific drug delivery systems (CDDS) can improve the bioavailability of drug through the oral route. A novel formulation for oral administration using pH-enzyme Di-dependent chitosan mcirospheres (MS) and 5-Fu as a model drug has been investigated for colon-specific drug delivery by the emulsification/chemical ...

journal_title：Chemical & pharmaceutical bulletin

authors： Zhao XL,Li KX,Zhao XF,Pang DH,Chen DW

更新日期：2008-07-01 00:00:00

abstract：:Three new steroidal glycosides, named solaviasides A, B, and C, have been isolated from the fruits of Solanum viarum DUNAL (syn. S. khasianum var. chatterjeeanum, Solanaceae), along with seven known ones. Their chemical structures were determined on the basis of spectroscopic data and chemical evidence. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Ono M,Kakiuchi T,Ebisawa H,Shiono Y,Nakamura T,Kai T,Ikeda T,Miyashita H,Yoshimitsu H,Nohara T

更新日期：2009-06-01 00:00:00

abstract：:When phenylalanine was irradiated at ultraviolet (UV) light, p-tyrosine, m-tyrosine and o-tyrosine were identified as hydroxylated products. From p-tyrosine and m-tyrosine, the formation of L-3,4-dihydroxyphenylalanine (DOPA) was observed. The hydroxylation of phenylalanine was prevented by radical scavengers, e.g., c...

journal_title：Chemical & pharmaceutical bulletin

authors： Ishimitsu S,Fujimoto S,Ohara A

更新日期：1990-05-01 00:00:00

abstract：:From whole plants of Euphorbia supina, two new megastigmane glucosides, named supinaionosides A and B (1, 2), six new hydroxynitrile glucosides, named supinanitrilosides A-F (3-8), and six known compounds were isolated. The structures of the new compounds were elucidated on the basis of spectroscopic and chemical evid...

journal_title：Chemical & pharmaceutical bulletin

authors： Cai WH,Matsunami K,Otsuka H

更新日期：2009-08-01 00:00:00

abstract：:Oligonucleotides containing a dG cluster, d(TmGnTm), are models of single-stranded parts of telomeric deoxyribonucleic acid and substitutes for poly(dG). Electrophoretic and spectroscopic analyses of the oligomers indicate that the oligomers can form two alternative structures, single- and quadruple-stranded helices, ...

journal_title：Chemical & pharmaceutical bulletin

authors： Shida T,Yokoyama K,Tamai S,Sekiguchi J

更新日期：1991-09-01 00:00:00

abstract：:Two novel analogs of a biosynthetic precursor of lipid A (2) were synthesized. The one analog (3) has acyl groups identical to those of 2, and the other (4) has tetradecanoyl groups in place of the (R)-3-hydroxytetradecanoyl groups of 2. Both 3 and 4 possess an alpha-glycosidically-bound phosphonooxyethyl group in pla...

journal_title：Chemical & pharmaceutical bulletin

authors： Kusama T,Soga T,Ono Y,Kumazawa E,Shioya E,Osada Y,Kusumoto S,Shiba T

更新日期：1991-08-01 00:00:00

abstract：:Two enkephalin-containing peptides, peptide E and dynorphin(1-24), were synthesized by conventional solution methods employing a new Trp derivative, Nin-(2,4,6-triisopropylphenylsulfonyl)tryptophan [Trp(Tps)]. All protecting groups employed including the Tps group were removed by treatment with 1 M trifluoromethanesul...

journal_title：Chemical & pharmaceutical bulletin

authors： Kitagawa K,Kawamoto T,Futaki S,Kiyama S,Akita T,Moritoki H,Kiso Y

更新日期：1989-10-01 00:00:00

abstract：:An improved synthetic route has been developed for the preparation of methyl 1-fluoroindan-1-carboxylate (FICA Me ester) from 1-indanone. Methyl 4-methyl-1-fluoroindan-1-carboxylate (4-Me-FICA Me ester) was also prepared following the same procedure. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Koyanagi J,Kamei T,Ishizaki M,Nakamura H,Takahashi T

更新日期：2014-01-01 00:00:00

abstract：:Chemical investigations on the sea whip gorgonian coral Junceella juncea have led to the isolation of five new 8-hydroxybriarane diterpenoids, junceols D-H (1-5). The structures of briaranes 1-5 were determined on the basis of spectroscopic methods and the methylenecyclohexane rings were found to exist in boat form in...

journal_title：Chemical & pharmaceutical bulletin

authors： Sung PJ,Pai CH,Hwang TL,Fan TY,Su JH,Chen JJ,Fang LS,Wang WH,Sheu JH

更新日期：2008-09-01 00:00:00

abstract：:The purpose of this study was to predict the stability of meropenem in a mixed infusion. The hydrolysis of meropenem in aqueous solution was found to be accelerated by pH, and by increasing concentrations of sodium bisulfite (SBS) and L-cysteine. Equations were derived for the degradation rate constants (kobs) of pH, ...

journal_title：Chemical & pharmaceutical bulletin

authors： Takasu Y,Yoshida M,Tange M,Asahara K,Uchida T

更新日期：2015-01-01 00:00:00

abstract：:In the conventional method of mixer blending extraction, the yields of the tomato-saponin, esculeoside A, in the mini and middy tomatoes were found to be 0.043% and 0.046%, respectively. In order to improve the yields, we attempted a more efficient extraction using shock waves. The yields of esculeoside A were 0.0987%...

journal_title：Chemical & pharmaceutical bulletin

authors： Manabe H,Takemoto A,Maehara H,Ohno M,Murakami Y,Itoh S,Nohara T

更新日期：2011-01-01 00:00:00

abstract：:Several microorganisms showed the ability to transform the harman alkaloids, harmaline (1), harmalol (2) and harman (5). Harmaline (1) and harmalol (2) were converted by Rhodotorula rubra ATCC 20129 into the tryptamines, 2-acetyl-3-(2-acetamidoethyl)-7-methoxyindole (3) and 2-acetyl-3-(2-acetamidoethyl)-7-hydroxyindol...

journal_title：Chemical & pharmaceutical bulletin

authors： Herath W,Mikell JR,Ferreira D,Khan IA

更新日期：2003-06-01 00:00:00

abstract：:Two alkaloids, megistoquinone I (1) and megistoquinone II (2), were isolated from the bark of Sarcomelicope megistophylla. Their structures have been elucidated on the basis of MS and NMR data. Both belong to quinoline alkaloid series and should be considered as oxidation products of a furo[2,3-b]quinoline precursor. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Fokialakis N,Magiatis P,Chinou I,Mitaku S,Tillequin F

更新日期：2002-03-01 00:00:00

abstract：:An uncommon, previously unreported p-quinone-lignan compound called justicidone (4-(1,3-benzodioxol-5-yl)-6-methoxynaphtho[2,3-c]furan-1,5,8(3H)-trione) (2), along with the known savinin (1) were isolated from Justicia hyssopifolia (Acanthaceae). Their structures were determined by spectroscopic methods. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Andrés Pérez J,Boluda C,López H,Manuel Trujillo J

更新日期：2004-01-01 00:00:00

abstract：:A calcium-binding protein, regucalcin, was isolated from rat liver cytosol. Rabbit-anti-regucalcin antiserum, which was raised against regucalcin conjugated by glutaraldehyde to bovine serum albumin, was applied to glutaraldehyde-fixed whole mounts and subsequently visualized using the peroxidase-antiperoxidase method...

journal_title：Chemical & pharmaceutical bulletin

authors： Yamaguchi M,Isogai M,Kato S,Mori S

更新日期：1991-06-01 00:00:00

abstract：:A highly sensitive high-performance liquid chromatography with fluorescence detection for the determination of arachidonic acid metabolites is described. The metabolites are converted into corresponding fluorescent derivatives by reaction with 3-bromomethyl-6,7-methylenedioxy-1-methyl-2(1H)-quinoxalinone in the presen...

journal_title：Chemical & pharmaceutical bulletin

authors： Yamaguchi M,Takehiro O,Ishida J,Nakamura M

更新日期：1989-10-01 00:00:00

abstract：:A series of 5-(4-aryl- or 4-arylcarbonylpiperazin-1-yl)-5-deoxy-1,4: 3,6-dianhydro-L-iditol 2-nitrates was prepared in order to obtain orally active, nitrate-type vasodilators with reduced side effects. Our drug design was based on a small reduction in the lipophilicity compared to that of 5-deoxy-5-[4-(3-phenylthiopr...

journal_title：Chemical & pharmaceutical bulletin

authors： Hayashi H,Ikeda J,Kubo K,Moriyama T,Karasawa A,Suzuki F

更新日期：1993-06-01 00:00:00

abstract：:To evaluate the usability of silk protein (sericin, SC) as a sustained-release material, the physicochemical properties of SC and the release profiles of model drugs from SC gel, sponge and film were studied. Heat aids the dissolution of SC. The molecular weight of SC tended to decrease as the heating temperature and ...

journal_title：Chemical & pharmaceutical bulletin

authors： Nishida A,Yamada M,Kanazawa T,Takashima Y,Ouchi K,Okada H

更新日期：2010-11-01 00:00:00

abstract：:A series of quinazoline derivatives with various 4-heterocyclylpiperidino groups at the 4-position was synthesized and tested for cardiotonic activity in anesthetized dogs. Among them, several 6,7-dimethoxyquinazoline derivatives showed potent cardiotonic activity. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Nomoto Y,Obase H,Takai H,Hirata T,Teranishi M,Nakamura J,Kubo K

更新日期：1990-06-01 00:00:00

abstract：:Three new fasciculol esters, fasciculic acids A (1), B (2) and C (3), having potent calmodulin antagonistic activity were isolated from the toxic mushroom Naematoloma fasciculare (Fr.) Karst. Their structures were elucidated on the basis of spectral and chemical evidence. ...

journal_title：Chemical & pharmaceutical bulletin

authors： Takahashi A,Kusano G,Ohta T,Ohizumi Y,Nozoe S

更新日期：1989-12-01 00:00:00

abstract：:As part of the search for new topical antiinflammatory agents, various 21-substituted corticosteroids having sulfur-containing moieties were prepared and tested for vasoconstrictive activity in humans. A structure-activity relationship study revealed that substitution of the 21-hydroxy group with a lower alkyl-thio gr...

journal_title：Chemical & pharmaceutical bulletin

authors： Mitsukuchi M,Ikemoto T,Taguchi M,Higuchi S,Abe S,Yasui H,Hatayama K,Sota K

更新日期：1989-07-01 00:00:00

abstract：:It is well known that high-pressure carbon dioxide (CO2) lowers the glass transition temperature (Tg) of polymers. We therefore investigated whether Tg depression of high-pressure CO2 results in interparticle bridging of a polymer and the tablet characteristics that makes the manufacture of an orally disintegrating ta...

journal_title：Chemical & pharmaceutical bulletin

authors： Kobayashi M,Shinozuka D,Kondo H,Sako K,Otake K

更新日期：2018-01-01 00:00:00

abstract：:The aim of this study was to evaluate the effects of Magnolin (MGL) on inhibition of human breast cancer cells, and explore the underlying molecular mechanisms. The viability of the treated cells was assessed with the Cell Counting Kit-8 (CCK-8) assay, and the proliferation was analyzed in terms of EdU uptake, colony ...

journal_title：Chemical & pharmaceutical bulletin

authors： Wang J,Zhang S,Huang K,Shi L,Zhang Q

更新日期：2020-01-01 00:00:00

abstract：:Thermodynamic studies were carried out to evaluate the binding of theophylline on adenosine deaminase (ADA) in 50 mM sodium phosphate buffer pH 7.5, at 300 K, using isothermal titration calorimetry (ITC). A simple method for determination of binding isotherm in the drug--ADA interaction was applied using ITC data. ADA...

journal_title：Chemical & pharmaceutical bulletin

authors： Saboury AA,Bagheri S,Ataie G,Amanlou M,Moosavi-Movahedi AA,Hakimelahi GH,Cristalli G,Namaki S

更新日期：2004-10-01 00:00:00

abstract：:A series of 3,4-dihydro-2H-1,4-benzoxazine-8-carboxamide derivatives was synthesized and evaluated for serotonin-3 (5HT3) receptor antagonistic activities by means of assays of 5-HT3 receptor binding and the ability to antagonize the von Bezold-Jarisch reflex in rats. Replacement of the 1,4-benzoxazine ring with a 1,4...

journal_title：Chemical & pharmaceutical bulletin

authors： Kuroita T,Marubayashi N,Sano M,Kanzaki K,Inaba K,Kawakita T

更新日期：1996-11-01 00:00:00

abstract：:CX-659S (1) [(S)-6-amino-5-(6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxamido)-3-methyl-1-phenyl-2,4-(1H,3H)-pyrimidinedione], has been developed as a new type anti-inflammatory agent for the treatment of dermatitis. The structure of a major metabolite of CX-659S was determined as (S)-6-amino-5-[2-hydroxy-2-methyl-4-...

journal_title：Chemical & pharmaceutical bulletin

authors： Isobe Y,Tobe M,Takahashi O,Goto Y,Inoue Y,Obara F,Tsuchiya M,Hayashi H

更新日期：2002-10-01 00:00:00

abstract：:Novel saponins that retain a free carboxyl group at the C-17 position and various sugars linked at the C-3 position of hederagenin aglycone were synthesized via stereospecific glycosylation. Since these natural products represented by Pulsatilla saponin D (PSD) were obtained in very small amounts, the total synthesis ...

journal_title：Chemical & pharmaceutical bulletin

authors： Kim M,Park Y,Chung WY,Park KK,Jung M

更新日期：2015-01-01 00:00:00