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    • 8. 发明申请
    • PROCESS FOR THE PREPARATION OF CRYPTOPHYCIN DERIVATIVES
    • 制备喹喔啉衍生物的方法
    • WO0034252A3
    • 2000-12-07
    • PCT/US9928496
    • 1999-12-02
    • LILLY CO ELIUNIV HAWAIIUNIV WAYNE STATE
    • DHOKTE ULHAS PRABHAKARKHAU VIEN VANMARTINELLI MICHAEL JOHN
    • C07D273/00C07D413/06C07D273/08C07F7/18
    • C07D273/00C07D413/06
    • Processes for the preparation of Cryptophycins of the formula (II), wherein G is (C1-C12) alkyl, (C2-C12) alkenyl, (C2-C12) alkynyl, or Ar; R is halogen and R is OH or glycinate ester; or R or R may be taken together to form an epoxide ring; or R or R may be taken together to form a bond; R is (C1-C6) alkyl; R and R are each independently hydrogen or (C1-C6) alkyl; or R and R , may be taken together to form a cyclopropyl or cyclobutyl ring; R is hydrogen, (C1-C6) alkyl, (C2-C6) alkenyl, (C2-C6) alkynyl, -(CH2)m-(C3-C5)cycloalkyl or benzyl; R , R is hydrogen or (C1-C6) alkyl; R is hydrogen, (C1-C6) alkyl, phenyl or benzyl; R is hydrogen or (=0); Y is CH, O, NR , S, SO, SO2, wherein R is hydrogen or (C1-C3) alkyl; R is (C1-C6) alkyl, substituted (C1-C6)alkyl, (C3-C8)cycloalkyl, substituted (C3-C8)cycloalkyl, a heteroaromatic or substituted heteroaromatic group or a group of formula (IA), (IB) OR (IC). The processes involve an asymmetric crotylboration and, in the preferred embodiment, a subsequent asymmetric allylboration, providing for an efficient method for preparing Fragment A of the Cryptophycin molecule.
    • 其中G为(C 1 -C 12)烷基,(C 2 -C 12)烯基,(C 2 -C 12)炔基或Ar的式(II)的半胱氨酸的制备方法; R 1是卤素,R 2是OH或甘氨酸酯; 或R 1或R 2可以一起形成环氧化物环; 或R 1或R 2可以一起形成键; R 3是(C 1 -C 6)烷基; R 7和R 8各自独立地为氢或(C 1 -C 6)烷基; 或R 7和R 8可以一起形成环丙基或环丁基环; R 9是氢,(C 1 -C 6)烷基,(C 2 -C 6)烯基,(C 2 -C 6)炔基, - (CH 2)m - (C 3 -C 5)环烷基或苄基; R 10,R 14是氢或(C 1 -C 6)烷基; R 11是氢,(C 1 -C 6)烷基,苯基或苄基; R 50为氢或(= O); Y是CH,O,NR 12,S,SO,SO 2,其中R 12是氢或(C1-C3)烷基; R 6是(C 1 -C 6)烷基,取代的(C 1 -C 6)烷基,(C 3 -C 8)环烷基,取代的(C 3 -C 8)环烷基,杂芳族或取代的杂芳族基团或式(IA) (IB)或(IC)。 该方法涉及不对称的巴豆基底,并且在优选的实施方案中为后续的不对称烯丙基化,提供了制备Cryptophycin分子的片段A的有效方法。