(S)-2-[4-(methoxymethoxy)phenyl]-1-(methoxymethyl)ethylamine 、 (S)-苯氧甲基环氧乙烷 在
silica gel 、 ethyl acetate n-hexane 、 乙酸乙酯 作用下,
以
乙醇 为溶剂,
反应 7.5h,
以hexane/ethyl acetate=2/1 to 1/1, then ethyl acetate only) to give (2S)-1-[(1S)-2-[4-(methoxymethoxy)phenyl]-1-(methoxymethyl)ethylamino]-3-(phenoxy)propan-2-ol (106 mg) as a pale yellow oil的产率得到(2S)-1-[(1S)-2-[4-(methoxymethoxy)phenyl]-1-(methoxymethyl)ethylamino]-3-(phenoxy)propan-2-ol
A compound of the formula (I) wherein X1 is bond or -O(CH2)m- (in which m is an integral number of 1, 2 or 3); X2 is bond, -(CH2)n-, etc. (in which n is an integral number of 1, 2 or 3); R1 is hydrogen or amino protective group; R2 is hydroxy(lower)alkyl or (lower)alkoxy(lower)alkyl; A is phenyl, pyridyl, indolyl or carbazolyl, each of which may be substituted with one or two substituent(s) selected from the group consisting of halogen, hydroxy, lower alkyl, etc.; and B is phenyl or pyridyl, each of which may be substituted with one or two substituent(s) selected from the group consisting of halogen, hydroxy, nitro, etc.; and a pharmaceutically acceptable salt thereof which is useful as a medicament.