申请人:——
公开号:US20040220273A1
公开(公告)日:2004-11-04
Benzamide compounds of Formula VII are prepared by reacting a benzoate compound of Formula V with an amine to obtain a benzamide compound of Formula VI, and then treating the benzamide VI with an amine deprotecting agent to obtain the benzamide VII; wherein R
1
and R
2
are each independently H, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, aryl, or substituted aryl; R
3
is alkyl, -alkylaryl, or aryl; and P* is an amino protective group.
1
Embodiments of this preparative method include one or more of the following additional steps: obtaining the benzoate V having the N-protected ortho-aminomethyl substituent by treating the corresponding benzoate IV having a free aminomethyl substituent with an amine protecting agent, hydrogenating an ortho-cyanobenzoate III (also referred to as benzonitrile III) to obtain the benzoate IV, cyanating an ortho-halobenzoate II to obtain benzonitrile III, and esterifying an ortho-halobenzoic acid I to obtain ortho-halobenzoate II. The benzamides are Formula VII are useful as intermediates in the preparation of HIV integrase inhibitors.
将第七式的苯甲酰胺化合物通过将第五式的苯甲酸酯化合物与胺反应制备得到苯甲酰胺化合物VI,然后用胺去保护剂处理苯甲酰胺VI以获得苯甲酰胺VII;其中R1和R2分别独立地为H、烷基、取代烷基、环烷基、取代环烷基、芳基或取代芳基;R3为烷基、-烷基芳基或芳基;P*为氨基保护基。该制备方法的实施方式包括以下一个或多个附加步骤:通过用胺保护剂处理具有N-保护的邻氨甲基取代基的对苯甲酸酯IV,氢化邻氰基苯甲酸酯III(也称为苯腈III)以获得苯甲酸酯IV,氰化邻卤苯甲酸酯II以获得苯腈III,以及酯化邻卤苯甲酸I以获得邻卤苯甲酸酯II。第七式的苯甲酰胺化合物在HIV整合酶抑制剂的制备中作为中间体具有用途。