CAS: 1070790-89-4; (2R,3S)-3-((6-(((4,6-Dimethylpyridin-3-yl)Methyl)Amino)-9-Isopropyl-9H-Purin-2-yl)Amino)Pentan-2-Ol

专利信息

专利号:US-2023104823-A1
优先权日:2020-01-22
标 题:Process for the preparation of purine derivatives exhibiting cdk inhibitory activity
发明人：SKEAD BENJAMIN; LONDESBROUGH DEREK; GILL CHRIS; HUDSON ALEX
权利人:CYCLACEL LTD
摘要:The present invention relates to a process for preparing a compound of formula [I], or a pharmaceutically acceptable salt thereof, said process comprising the steps of: (i) forming a reaction mixture comprising a compound of formula [II] and a compound of formula [III]; (ii) heating said reaction mixture to a temperature of at least about 130° C. to form a compound of formula [I]; (iii) isolating said compound of formula [I] from the mixture and optionally recovering unreacted compound of formula [III]; and (iv) optionally converting said compound of formula [I] into salt form; wherein: R1 and R2 are each independently H, alkyl or haloalkyl; R3 and R4 are each independently H, alkyl, haloalkyl or aryl; R5 is alkyl, alkenyl, cycloalkyl or cycloalkyl-alkyl, each of which may be optionally substituted with one or more OH groups; R6 is selected from cyclopropylamino, cyclopropylmethylamino, cyclobutylamino, cyclobutylmethylamino and where one of X, Y and Z is N and the remainder are CR9; R7, R8 and each R9 are independently H, alkyl or haloalkyl, wherein at least one of R7, R8 and R9 is other than H. Further aspects of the invention relate to a process for preparing intermediates of formula [II], and other intermediates useful in the synthesis of compounds of formula [I].

专利号:US-10927113-B2
优先权日:2017-01-26
标 题 :Process for preparing purine derivatives
发明人：SKEAD BENJAMIN MARK; WESTWOOD ROBERT; LONDESBROUGH DEREK; NORTHEN JULIAN SCOTT; ATHERTON JONATHAN CHARLES CHRISTIAN
权利人:CYCLACEL LTD
摘要:The present invention relates to a process for preparing a compound of formula [I], said process comprising the steps of: formula [II]+formula [III]→formula [I] (i) forming a reaction mixture comprising (a) a compound of formula [II], (b) a compound of formula [III] and (c) 1,2-propanediol or polyethylene glycol, or a mixture thereof, and optionally (d) a base; (ii) heating said reaction mixture to a temperature of at least about 150° C. to form a compound of formula [I]; (iii) isolating said compound of formula [I]; and (iv) optionally converting said compound of formula [I] into salt form; wherein: R 1 and R 2 are each independently H, alkyl or haloalkyl; R 3 and R 4 are each independently H, alkyl, haloalkyl or aryl; R 5 is alkyl, alkenyl, cycloalkyl or cycloalkyl-alkyl, each of which may be optionally substituted with one or more OH groups; R 6 is selected from cyclopropylamino, cyclopropylmethylamino, cyclobutylamino, cyclobutylmethylamino and formula (A) where one of X, Y and Z is N and the remainder are CR 9 ; R 7 , R 8 and each R 9 are independently H, alkyl or haloalkyl, wherein at least one of R 7 , R 8 and R 9 is other than H. Further aspects of the invention relate to a highly diastereoselective process for the preparation of compounds of formula [III], a process for preparing intermediates of formula [II], and other intermediates useful in the synthesis of compounds of formula [I], and to a process for preparing the crystalline tartrate salt and free base of compounds of formula [I].