A Versatile New Method for Synthesis of Isoquinolines; 6,8-Dihydroxyisoquinoline Derivatives from 6-Methyl-1,3-oxazin-4-ones
摘要:
A versatile method for synthesis of isoquinolone derivatives (4a-h) from 2-substituted 6-methyl-4H-1,3-oxazin-4-ones (1a-h) is described. Transformation of 1a-h with diethyl acetonedicarboxylate (2) in the presence of potassium tert-butoxide afforded 6-substituted 3-acetyl-5-ethoxycarbonyl-4-ethoxycarbonylmethylene-2-pyridones (3a-h) in excellent yields. Dieckmann-type cyclization of 3a-h with sodium ethoxide in ethanol produced the corresponding isoquinolone derivatives (4a-h) in good yields, respectively.
描述了通过三种互补方法制备各种2,6-二取代的4 H -1,3-恶嗪-4-酮3的简便方法。在催化量的乙酸存在下用双烯酮1处理支链脂族亚氨酸酯2c,d,得到2-取代的6-甲基-1,3-恶嗪-4-酮3c,d,而未支链的亚氨酸酯2b,e得到恶嗪3b,e和嘧啶4b,e(方法A)。酰基麦德鲁姆酸5与亚氨酸酯2的反应得到2,6-二取代的恶嗪3,尽管烷基亚胺基丁酸酯与乙酰基麦德鲁姆的酸产生3和5-乙酰基-1,3-恶嗪-4,6-二酮8(方法B)。酰基乙酰基羧酰胺13的烷基脱水 用酸,例如70%高氯酸或氟磺酸,得到1,3-恶嗪3(方法C)。
Mitotic kinesin inhibitors and methods of use thereof
申请人:Hans Jeremy
公开号:US20100331283A1
公开(公告)日:2010-12-30
This invention relates to inhibitors of mitotic kinesins, particularly KSP, and methods for producing these inhibitors. The invention also provides pharmaceutical compositions comprising the inhibitors of the invention and methods of utilizing the inhibitors and pharmaceutical compositions in the treatment and prevention of various disorders.