The present invention relates to a method of producing an optically active cyanohydrin derivative, which comprises reacting an aldehyde or an asymmetrical ketone with a cyanating agent in the presence of a Lewis base and a titanium compound produced from a partial hydrolysate of titanium tetraalkoxide and an optically active ligand represented by formula (II) or a titanium oxoalkoxide compound represented by formula (I) [Ti
x
O
y
](OR
1
)
4x-2y
, and an optically active ligand represented by formula (II), wherein R
1
is an optionally substituted alkyl group or an optionally substituted aryl group; x is an integer of not less than 2; y is an integer of not less than 1; and y/x satisfies 0.1
本发明涉及一种制备光学活性
氰醇衍
生物的方法,包括在Lewis碱和由
钛四烷氧化物的部分
水解物和式(I)[TixOy](OR1)4x-2y,以及由式(II)表示的光学活性
配体组成的
钛氧烷衍
生物的存在下,将醛或不对称酮与
氰化试剂反应。其中,R1是可选的取代基的烷基或芳基;x为不小于2的整数;y为不小于1的整数;且y/x满足0.1
Methods of treating alzheimer's disease
申请人:Schostarez Heinrich
公开号:US20050130941A1
公开(公告)日:2005-06-16
Disclosed are methods for treating Alzheimer's disease, and other diseases, and/or inhibiting beta-secretase enzyme, and/or inhibiting deposition of A beta peptide in a mammal, by use of hydrazine compounds of formula (I) wherein the variables R
1
-R
9
are defined herein.
本发明涉及使用式(I)中变量R1-R9所定义的
肼化合物治疗阿尔茨海默病和其他疾病,抑制β-分泌酶酶活性,抑制A beta肽在哺乳动物体内的沉积。
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