Výsledky vyhledávání - "K.N. Thimmaiah"

Analysis of oxidation products of 10-[3′-N-benzylaminopropyl]-phenoxazine redox indicator by spectral and cyclic voltammetric methods

Autor: L. Ramesh, H. N. Kalpana, B. C. Channu, K.N. Thimmaiah

Publikováno v: Proceedings / Indian Academy of Sciences. 111:725-739

Synthesis of 10-[(3′-N-benzylamino)propyl]phenoxazine [BAPP] is accomplished in two steps. The first step involved N10-alkylation of parent phenoxazine via phase transfer catalysis (PTC) followed by iodide-catalysed nucleophilic substitution of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::677ac52b5ef18ad5fc7001c917d53288
https://doi.org/10.1007/bf02871286

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Chemical characterization of the in vitro degradation products of vindesine sulfate

Autor: Winston D. Lloyd, V.S. Sethi, K.N. Thimmaiah

Publikováno v: Microchemical Journal. 42:115-120

Vindesine (VDS) was incubated in 0.2 M glycine buffer (pH 4.0, 7.4, or 8.8) containing bovine serum albumin (1%) at 37 °C for 24 or 72 h. The reaction mixture was extracted with CH 2 Cl 2 . HPLC analysis (μBondapak C 18 , 10 μm, reverse-phase stee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75a3b9d390d36b6b4a4d8dc4dce5a14a
https://doi.org/10.1016/0026-265x(90)90030-9

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Characterization of the products of vinblastine dihydrogen sulfate formed after in vitro incubation in bile

Autor: K.N. Thimmaiah, V.S. Sethi

Publikováno v: Microchemical Journal. 41:313-319

Vinblastine (VLB) was incubated in bile from a dog at 37 °C for 72 h. The reaction mixture was extracted with methylene chloride and the extract gave four major peaks (A, B, C, and D) with retention times of 4.0, 6.5, 9.8, and 28.0 min, respectively

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4957ef37791bd2b234637afef75e60d
https://doi.org/10.1016/0026-265x(90)90135-r

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Structural investigations of the products of vincristine sulfate formed after in vitro incubation of the alkaloid in bile of dogs

Autor: K.N. Thimmaiah, V.Sagar Sethi

Publikováno v: Microchemical Journal. 41:320-326

Vincristine (VCR) was incubated in bile from dogs at 37 °C for 72 h. At the end of the incubation, the mixture was extracted with methylene chloride. HPLC analysis (μBondapak C18, 10-μm, reverse-phase steel column; isocratic solvent system, 50% Me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6aba635522c3aae34f2543a4c39540b
https://doi.org/10.1016/0026-265x(90)90136-s

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Desorption chemical ionization and field desorption mass spectrometric analysis of antitumor Catharanthus (Vinca) alkaloids

Autor: N. M. Made Gowda, K.N. Thimmaiah, V.S. Sethi, Michael J. Thomas

Publikováno v: Microchemical Journal. 41:183-190

Antitumor Catharanthus (Vinca) alkaloids, vinblastine and vincristine, and their chemically modified derivatives N-deformylvincristine, N-deformyl-4-deacetylvincristine, vindesine, 4-deacetylvinblastine, and 4-deacetylvincristine, after purification

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e553af95e2d17733e92758a19fbb2551
https://doi.org/10.1016/0026-265x(90)90117-n

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Extractive spectrophotometric determination of molybdenum(V) in molybdenum steels

Autor: G.T. Chandrappa, K.N. Thimmaiah, Winston D. Lloyd

Publikováno v: Microchemical Journal. 32:281-285

An extraction spectrophotometric method has been developed for the determination of traces of molybdenum present in molybdenum steels which is based on the extraction of the orange-red molybdenum-thiocyanate-acetonethiosemicarbazone complex into chlo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2ff69208ee690ad9b9a5982441d387d
https://doi.org/10.1016/0026-265x(85)90090-6

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Synthesis and chemical characterization of biologically important complexes of vanillin thiosemicarbazone with manganese(II), iron(II), cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), and mercury(II)

Autor: Winston D. Lloyd, Cyril Párkányi, K.N. Thimmaiah, Gujjarahalli T. Chandrappa

Publikováno v: Transition Metal Chemistry. 10:299-302

Vanillin thiosemicarbazone (VTSC) has been used to isolate the complexes of the types [M(VTSC)2(H2O)2]X2 (M=MnII, FeII, CoII, or NiII and X=Cl) and [M(VTSC)X2]H2O (M=CuII, ZnII, CdII or HgII and X=Cl). Probable structures of these complexes are sugge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a05c3942f521b00746e4a02a77f027fe
https://doi.org/10.1007/bf00619014

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Extractive spectrophotometric determination of molybdenum as a thiocyanate-2-acetylpyridinethiosemicarbazone complex

Autor: K.N. Thimmaiah, H. Sankegowda, K. Krishna Murthy

Publikováno v: Microchemical Journal. 32:8-12

A new spectrophotometric method for the determination of molybdenum is based on the extraction of the orange red molybdenum thiocyanate-2-acetylpyridinethiosemicarbazone complex into chloroform from hydrochloric acid. The complex has an absorption ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::025b1ed4caa82d49447bc48c6404fa53
https://doi.org/10.1016/0026-265x(85)90045-1

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