Synthesis of propanolamine side chain deuterated propranolol, propranolol-diol and 4-hydroxypropranol

Synthesis of propanolamine side chain deuterated propranolol, propranolol-diol and 4-hydroxypropranol
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丙醇胺侧链氘代普萘洛尔、普萘洛尔二醇和4-羟基普萘洛的合成

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发表时间:
1978
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通讯作者:
W. L. Nelson
W. L. Nelson
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作者:
R. B. Walker;W. L. Nelson

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以环氧氯丙烷-d5为原料合成了1-异丙基氨基-3-(1-萘氧基)-2-丙醇-1,1,2,3,3-d5(1),3-(1-萘氧基)-1,2-丙二醇-1,1,2,3,3-d5(2)和1-异丙基氨基-3-(4-羟基-1-萘氧基)-2-丙醇-1,1,2,3,3-d5(3)。在催化量的吡啶存在下,用1-萘酚处理表氯醇-d5,得到1-氯-3-(1-萘氧基)-2-丙醇-1,1,2,3,3-d5(4)和1,2-环氧-(1-萘氧基)-丙烷-1,1,2,3,3-d5的混合物,用HCl将其转化为4,或用6 N KOH将其转化为5。4与异丙胺反应得到1。酸催化水解5得到2。使用4-甲氧基-1-萘酚、表氯醇-d5(1 N NaOH)对1的合成进行改进,得到环氧化物7,将其用异丙胺打开。用吡啶HCl裂解醚完成1-(异丙基氨基)-3-(4-羟基-1-萘氧基)-2-丙醇-1,1,2,3,3-d5(3)的合成。
Syntheses of 1-(isopropylamino)-3-(1-naphthyloxy)-2-propanol-1,1,2,3,3-d5 (1), 3-(1-naphthyloxy)-1,2-propanediol-1,1,2,3,3-d5 (2) and 1-(isopropylamino)-3-(4-hydroxy-1-naphthyloxy)-2-propanol-1,1,2,3,3-d5 (3) from epichlorohydrin-d5 are described. Treatment of epichlorohydrin-d5 with 1-naphthol, in the presence of a catalytic amount of pyridine, afforded a mixture of 1-chloro-3-(1-naphthyloxy)-2-propanol-1,1,2,3,3-d5 (4) and 1,2-epoxy-(1-naphthyloxy)-propane-1,1,2,3,3-d5 which was converted to 4, with HCl or to 5 with 6N KOH. Reaction of 4 with isopropylamine afforded 1. Acid catalyzed hydrolysis of 5 afforded 2. A modification of the synthesis of 1 using 4-methoxy-1-naphthol, epichlorohydrin-d5 (1N NaOH) afforded epoxide 7, which was opened with isopropylamine. Ether cleavage with pyridine HCl completed synthesis of 1-(isopropylamino)-3-(4-hydroxy-1-naphthyloxy)-2-propanol-1,1,2,3,3-d5 (3).