A novel approach to functionalised 5,7,8,9-tetrahydropyrimido[4,5-b][1,4]diazepin-6-ones using intramolecular palladium-catalysed amidation
摘要:
The development of a novel palladium-catalysed amidation approach towards 5,7,8,9-tetrahydropyrimido[4,5-b][1,4]diazepin-6-one templates is highlighted. The route proceeds through the reaction of an amino amide, generated by 1,4-addition of an amine to an acrylamide, with 5-bromo-2,4-dichloropyrimidine and final palladium-catalysed cyclisation to provide the functionalised scaffold in up to 60% isolated yield over three steps. The route offers efficiency advantages over the previously reported nitro-reduction cyclisation approach to these molecules. It also provides alternative means to introduce bulky alkyl substituents at the amide nitrogen. The application of this route in the synthesis of a variety of analogues is described. (C) 2012 Published by Elsevier Ltd.
DOI:
10.1016/j.tetlet.2012.03.125
作为产物:
描述:
仲丁胺 、 N-甲基-2-丙烯酰胺 在
甲醇 、 氨 作用下,
以
乙醇 为溶剂,
反应 1.25h,
以to afford the title compound as a straw coloured oil (563 mg; 61%)的产率得到3-(butan-2-ylamino)-N-methyl-propanamide
There is provided a compound of formula (I):
processes for the manufacture thereof, pharmaceutical compositions thereof and uses in therapy.
提供了一个化合物的化学式(I):
其制备方法,药物组合物以及在治疗中的用途。
Compounds
申请人:AstraZeneca AB
公开号:US07709471B2
公开(公告)日:2010-05-04
There is provided a compound of formula (I):
processes for the manufacture thereof, pharmaceutical compositions thereof and uses in therapy.
提供了一个公式(I)的化合物:其制造过程,制药组合物及其在治疗中的用途。
FUSED PYRIMIDO COMPOUNDS
申请人:AstraZeneca AB
公开号:EP2046793A2
公开(公告)日:2009-04-15
US7709471B2
申请人:——
公开号:US7709471B2
公开(公告)日:2010-05-04
[EN] NOVEL COMPOUNDS<br/>[FR] NOUVEAUX COMPOSÉS
申请人:ASTRAZENECA AB
公开号:WO2008003958A2
公开(公告)日:2008-01-10
[EN] There is provided a compound of formula (I):processes for the manufacure thereof, pharmaceutical compoitions thereof and uses in therapy. [FR] L'invention concerne un composé représenté par la formule (I), des procédés de fabrication de ce composé, des compositions pharmaceutiques de ce composé et les utilisations thérapeutiques de ce composé.