British Abstracts: Pure chemistry and physiology. ser. A1935 |
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... acid , m.p. 212 ° ( decomp . ) . 1 : 3 - Dimethyluric acid in AcOH - H2O gives 5- chloro - 1 3 - dimethyl - p - uric acid , whereas in CHCl3 , Ac2O , or anhyd . AcOH 5 - chloro - 1 : 3 - dimethyl- △ 4 : 9 . isouric acid ( IX ) , m.p. ...
... acid , m.p. 212 ° ( decomp . ) . 1 : 3 - Dimethyluric acid in AcOH - H2O gives 5- chloro - 1 3 - dimethyl - p - uric acid , whereas in CHCl3 , Ac2O , or anhyd . AcOH 5 - chloro - 1 : 3 - dimethyl- △ 4 : 9 . isouric acid ( IX ) , m.p. ...
Trang 749
... acid ( diolivetolcarboxylic acid Me , ether ) ( II ; R = C , H11 ) , m.p. 108 , very similar except in m.p. to Zopf's im- bricaric acid ( III ) . It is hydrolysed by alkali to olivetolcarboxylic acid Me , ether , m.p. 126 ° , olivetol ...
... acid ( diolivetolcarboxylic acid Me , ether ) ( II ; R = C , H11 ) , m.p. 108 , very similar except in m.p. to Zopf's im- bricaric acid ( III ) . It is hydrolysed by alkali to olivetolcarboxylic acid Me , ether , m.p. 126 ° , olivetol ...
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... acid ( loc . cit . ) and oxidised to ( V ) ] ; and y - 3 - amino - 4- ethoxybenzoylbutyric acid , m.p. 176-178 ° . Attempts to cyclise ( IV ) and ( VI ) through the m - position were unsuccessful ; the stereochemical considerations ( A ...
... acid ( loc . cit . ) and oxidised to ( V ) ] ; and y - 3 - amino - 4- ethoxybenzoylbutyric acid , m.p. 176-178 ° . Attempts to cyclise ( IV ) and ( VI ) through the m - position were unsuccessful ; the stereochemical considerations ( A ...
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absorption Ac₂O Acad acetate acid AcOH action activity adsorption affords alcohol alkaline Amer approx atoms Biochem Biol blood boiling Bull calc catalyst cells CHCl3 Chem Chim chloride CO₂ CO₂H coeff colloidal compounds Compt conc concn const containing converted crystals curves decomp decreases derivative determined effect electrolytes electron enzyme ester EtOH excretion extract formation formed gives glucose H₂ H₂O H₂SO heat hydrochloride hydrogen hydrolysis increased injection ionisation ions ketone lactic acid lattice liquid liver MeOH metabolism metals method mixture NaCl NaOH normal NUTR obtained oxidation oxidised oxime phenols PhOH Physical Rev Physiol picrate pptd pptn prep presence pressure Proc protein reaction reduced rend room temp salts semicarbazone similarly solution spectra spectrum structure substance sucrose titration urine vals vapour velocity viscosity vitamin-D whilst X-ray yields Zentr