申请人:Lever Brothers Company, Division of Conopco, Inc.
公开号:US05872111A1
公开(公告)日:1999-02-16
The present invention relates to novel detergent and/or personal wash compositions comprising glycosylamide surfactants.
本发明涉及含有糖基酰胺表面活性剂的新型洗涤剂和/或个人清洁组合物。
US5872111A
申请人:——
公开号:US5872111A
公开(公告)日:1999-02-16
A new class of nitrosoureas. II. Synthesis and antitumor activity of 1-(2-chloroethyl)-3,3-disubstituted-1-nitrosoureas having a glucopyranosyl, mannopyranosyl or galactopyranosyl moiety.
Many kinds of 1-(2-chloroethyl)-3-substituted-3-β-D-glycopyranosyl-1-nitrosoureas (V) were synthesized and tested for antitumor activities against leukemia L1210 and Ehrlich ascites carcinoma. The reaction of aldohexoses such as D-glucose, D-mannose, and D-galactose with primary amines followed by treatment with 2-chloroethyl isocyanate usually gave a mixture of structural isomers of glycosylureas (III'). Complete isomerization into thermodynamically stable β-D-glycopyranosylureas (III) was observed when the mixture of isomers was dissolved in formic acid. Glycopyranosylureas (III) were nitrosated with 5 equivalents of dinitrogen tetroxide followed by treatment with methanol to give the corresponding nitrosoureas (V) in good yields. Many of the nitrosoureas (V) were remarkably active against both leukemia L1210 and Ehrlich ascites carcinoma and showed greater therapeutic ratios than those of the positive controls, 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea, 3 [(4-amino-2-methyl-5-pyrimidinyl) methyl]-1-(2-chloroethyl)-1-nitrosourea, and 1-(2-chloroethyl)-3-(β-D-glucopyranosyl)-1-nitrosourea. In particular, some of the galactopyranosylnitrosoureas showed excellent antitumor activities and sixtyday survivors against leukemia L1210 were observed at dose levels of 25, 50 and 100 mg/kg of the compounds. These nitrosoureas (V) appear to be activated nonenzymatically by attack of the hydroxyl group of the sugar moiety on the carbonyl group to give the cyclic carbamate (VI) without generation of the isocyanate (XI).