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    • 1. 发明申请
    • 2-BENZYL-POLYCYCLIC GUANINE DERIVATIVES AND PROCESS FOR PREPARING THEM
    • 2-苄基 - 多环烷酸衍生物及其制备方法
    • WO1994019351A1
    • 1994-09-01
    • PCT/US1994001728
    • 1994-02-24
    • SCHERING CORPORATIONTULSHIAN, DeenMcKITTRICK, Brian, A.XIA, YanCHACKALAMANNIL, SamuelGALA, DineshDIBENEDETTO, Donald, J.KUGELMAN, Max
    • SCHERING CORPORATION
    • C07D487/14
    • C07D487/14C07D239/54C07D473/40
    • Antihypertensive and bronchodilating compounds of formula (I) or a pharmaceutically acceptable salt thereof, and a process for preparing them are disclosed, wherein: R1, R2 and R3 are hydrogen, lower alkyl, lower alkoxy, halogeno, hydroxy, (di-lower alkyl)amino, 4-morpholinyl, 1-pyrrolidinyl, 1-pyrrolyl, -CF3, -OCF3, phenyl or methoxyphenyl; or R1 and R2 together are methylenedioxy; or R1 and R2 together with the carbon atoms to which they are attached form a benzene ring; and R is hydrogen and R and R , together with the carbon atoms to which they are attached, form a saturated ring of 5 carbons; or R is lower alkyl, R is hydrogen or lower alkyl, and R is hydrogen; or R , R and the carbon atom to which they are attached form a saturated ring of 5-7 carbons, and R is hydrogen; or R is hydrogen, and R , R and the carbon atoms to which they are attached form a tetrahydrofuran ring; or R and R , together with the carbon atom to which they are attached, and R and R , together with the carbon atoms to which they are attached, each form a saturated ring of 5-7 carbons; pharmaceutical compositions containing said compounds: methods of treatment using said compounds; and a process for preparing polycyclic guanines comprising a) reducing a nitrosopyrimidine, and treating the reduced nitrosopyrimidine with an acylating reagent to give the amidopyrimidine; b) reacting the amidopyrimidine with a halogenating/cyclizing reagent to give a halopurine; c) reacting, in the presence of a base, the halopurine with an amine to give the substituted aminopurine; and d) closing the ring of the substituted aminopurine with a suitable dehydrating agent.
    • 公开了式(I)的抗高血压药和支气管扩张剂化合物或其药学上可接受的盐及其制备方法,其中:R1,R2和R3为氢,低级烷基,低级烷氧基,卤代,羟基,(二低级烷基 )氨基,4-吗啉基,1-吡咯烷基,1-吡咯基,-CF3,-OCF3,苯基或甲氧基苯基; 或R 1和R 2一起是亚甲二氧基; 或R 1和R 2与它们所连接的碳原子一起形成苯环; 和R a是氢,R和R c连同它们所连接的碳原子一起形成5个碳原子的饱和环; 或R a是低级烷基,R b是氢或低级烷基,R c是氢; 或R a,R b和它们所连接的碳原子形成5-7个碳原子的饱和环,R c是氢; 或R a是氢,R b,R c和它们所连接的碳原子形成四氢呋喃环; 或R a和R b与它们所连接的碳原子一起,和R和R c连同它们所连接的碳原子一起形成饱和的环 5-7个碳; 含有所述化合物的药物组合物:使用所述化合物的治疗方法; 以及制备多环鸟嘌呤的方法,包括a)还原亚硝基嘧啶,用酰化试剂处理还原的亚硝基嘧啶,得到酰胺嘧啶; b)使酰胺嘧啶与卤化/环化试剂反应得到卤代嘌呤; c)在碱的存在下使卤代嘌呤与胺反应,得到取代的氨基嘌呤; 和d)用合适的脱水剂封闭取代的氨基嘌呤的环。