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    • 90. 发明公开
    • Asymmetric catalytic reduction of oxcarbazepine
    • 不对称性卡塔西泮
    • EP2319836A1
    • 2011-05-11
    • EP11152286.8
    • 2006-04-21
    • Bial-Portela & CA, S.A.
    • Learmonth, David AlexanderGrasa, Gabriela AlexandraZanotti-Gerosa, Antonio
    • C07D223/22
    • C07D223/28A61K31/55C07D223/22
    • A process for preparing (S)-(+)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide or (R)-(-)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide, by reduction of oxcarbazepine in the presence of a catalyst and a hydride source is disclosed. The catalyst is prepared from a combination of [RuX 2 (L)] 2 wherein X is chlorine, bromine or iodine, and L is an aryl or aryl-aliphatic ligand, with a ligand of formula (A) or formula (B):

      wherein R 1 is chosen from C 1-6 alkoxy and C 1-6 alkyl, n is a number from 0 to 5, and when n is a number from 2 to 5, R 1 can be the same or different, and R 2 is alkyl, substituted alkyl, aryl, substituted aryl, alkaryl or substituted alkaryl. The hydride source is either NR 3 R 4 R 5 and formic acid, [R 3 R 4 R 5 NH][OOCH] and optionally formic acid, or [M][OOCH] x and formic acid, wherein R 3 , R 4 and R 5 are C 1-6 alkyl, M is an alkali metal or alkaline earth metal and x is 1 or 2. A pH from 6.5 to 8 is maintained during the process.
    • 制备(S) - (+) - 10,11-二氢-10-羟基-5H-二苯并/ b,f /吖庚因-5-甲酰胺或(R) - ( - ) - 10,11-二氢 - 公开了在催化剂和氢化物源的存在下还原奥卡西平,10-羟基-5H-二苯并/ b,f /吖庚因-5-甲酰胺。 催化剂由[RuX 2(L)] 2(其中X是氯,溴或碘)和L是芳基或芳基 - 脂族配体与式(A)或式(B)的配体组合制备: 其中R 1选自C 1-6烷氧基和C 1-6烷基,n为0至5的数,当n为2至5的数时,R 1可以相同或不同,并且R 2 是烷基,取代的烷基,芳基,取代的芳基,烷芳基或取代的烷芳基。 氢化物源是NR 3 R 4 R 5和甲酸,[R 3 R 4 R 5 NH] [OOCH]和任选的甲酸或[M] [OOCH] x和甲酸,其中R 3,R 4 R 5为C 1-6烷基,M为碱金属或碱土金属,x为1或2.在此过程中,维持6.5至8的pH。