A Short and Efficient Synthesis of a Chiral Pyridazinone Derivative by the Chiral-Pool Method
作者:Kunihide Fujimori、Noriyuki Yoshida、Katsuya Awano、Tomoshige Kobayashi
DOI:10.1055/s-2004-829107
日期:——
The asymmetric synthesis of a (R)-4,5-dihydro-5-methylpyridazin-3(2H)-one derivative bearing a pyrazolopyridine ring, which is a potent inhibitor of phosphodiesterase, was achieved with a high optical yield in four steps starting from (R)-2-chloropropionyl chloride by a chiral-pool method.
通过手性池法,以(R)-2-氯丙酰氯为起点,分四步不对称合成了一种具有吡唑吡啶环的(R)-4,5-二氢-5-甲基哒嗪-3(2H)-酮衍生物,该衍生物是一种有效的磷酸二酯酶抑制剂。