N-(2-amino-ethyl)-3-[4-((S)-2-hydroxy-3-isopropylamino-propoxy)-phenyl]-propionamide 、
6-(3-chloro-4-(3-{2-[4-((S)-1-oxiranylmethoxy)-phenyl]-ethoxy}-propoxy)-phenyl)-4,5-dihydro-2H-pyridazin-3-one 、 (2-{2-[4-((S)-1-oxiranylmethoxy)-phenyl]-acetylamino}-ethyl)-carbamic acid tert butyl ester 在
crude product 、 silica gel 、 eluent 、
甲醇 、
二氯甲烷 作用下,
以to give 6-[3-Chloro-4-(3-{2-[4-((S)-2-hydroxy-3-isopropylamino-propoxy)-phenyl]-ethoxy}-propoxy)-phenyl]-4,5-dihydro-2H-pyridazin-3-one (46a) as a pale yellow foam (24 mg, 19% yield), 100% pure by LC-MS的产率得到6-[3-chloro-4-(3-{2-[4-((S)-2-hydroxy-3-isopropylamino-propoxy)-phenyl]-ethoxy}-propoxy)-phenyl]-4,5-dihydro-2H-pyridazin-3-one