The effects of 4-deoxypyridoxine were contrasted with those of prolonged periods of dietary pyridoxine deficiency using Sarcoma 180 (S-180) as a test system. The drug was inactive against this tumor in animals fed complete diets. The antime tabolite markedly inhibited the growth of S-180 in mice fed a vitamin B6-deficient diet from the day of tumor implantation. Under such dietary conditions, w...

I. Blood Pressure Responses to Epinephrine in Dogs with Certain Humoral Backgrounds. Gale C. Boxill and Robert V. Brown 1 II. Isobols of Dose-Effect Relations in the Combination of Nikethamide (Coramine) and Phenobarbital. S. Loewe 6 III. Detoxication and Excretion of Mephentermine. Sidney S. Walkenstein, Nina Chumakow and Joseph Seifter 16 IV. The Effects of Analgesic Agents on Barbiturate Res...

A convenient synthesis of (S)-proline hydrazide 2a via the reaction of ethyl (S)-N-benzylprolinate with hydrazine hydrate and subsequent deprotection of (S)-N-benzyl proline hydrazide 5 is described. The latter, in methanolic solution, reacted with aromatic aldehydes as well as with cycloaliphatic ketones at room temperature to give the corresponding hydrazones of type 7 in good yields. The str...

A Highly efficient protocol has been developed for the synthesis of 2-hydrazolyl-4-thiazolidinone derivatives installing a one pot three component coupling reaction of an aromatic aldehyde, thiosemicarbazide and maleic anhydride using guanidine hydrochloride as highly inexpensive and environmentally friendly catalyst under solvent free condition at 1200C with good to excellent yields, It offers...

A new thiosemicarbzone compound was prepared by the reaction of acenaphthenequinone and thiosemicarbazide (1:1 molar ratio) in absolute methanol at 70°C. The crystal structure of this compound, acenaphthenequinone thiosemicarbazone mono methanol, was determined by X-ray crystallography. The unit cell parameters are as follows: a = 7.0384(14) Ǻ, b = 14.202(3) Ǻ, c = 14.270(3) Ǻ, β = 104.26(3)°. ...

A series of novel glycosylthiadiazole derivatives, namely 2-phenylamino-5-glycosyl-1,3,4-thiadiazoles, were designed and synthesized by condensation between sugar aldehydes A/B and substituted thiosemicarbazide C followed by oxidative cyclization by treating with manganese dioxide. The original fungicidal activities results showed that some title compounds exhibited excellent fungicidal activit...

Susceptibility to TSC1 (an antagonist of vitamin B6) was compared in seven animal species together with the protective effect of B61 on the induction of convulsions. Susceptibility to TSC occurred generally with the phylogenetic development of the brain of vertebrates as well as invertebrates. Abnormal behavior analogous to running fit in rat or mouse, which was thought to be a characteristic a...

2-Amino-5-(2-aryl-2H-1,2,3-triazol-4-yl)-1,3,4-thiadiazoles 2-4 have been synthesized by the reaction of 2-aryl-2H-1,2,3-triazole-4-carboxylic acids 1 with thiosemicarbazide. Their reaction with phenacyl (p-substituted phenacyl) bromides led to formation of the respective 6-aryl-2-(2-aryl-2H-1,2,3-triazol-4-yl)imidazo[2,1-b]-1,3,4-thiadiazoles 5. Reactivity of the latter fused ring towards reac...

A series of substituted N-(Benzylidineamine)-3-cycloalkylidine-thiosemicarbazide derivatives have been synthesized, characterized and evaluated for their antifungal and antibacterial activities. The newly synthesized compounds were characterized by IR, NMR, Mass and elemental analysis. All compounds were tested for antifungal and antibacterial activities. The preliminary results revealed that s...