Stereochemical aspects of phenylethanolamine analogs as substrates of phenylethanolamine N-methyltransferase
作者:Gary L. Grunewald、Qizhuang Ye
DOI:10.1021/jm00118a021
日期:1988.10
Phenylethylamines and phenylethanolamines represent two major classes of ligands for the epinephrine synthesizing enzyme, phenylethanolamineN-methyltransferase (PNMT;EC 2.1.1.28). Phenylethylamines are usually competitive inhibitors and the isomers with the relative configuration as in (2S)-amphetamine (1) and (2S)-2-aminotetralin (3) are better inhibitors than their enantiomers. Phenylethanolamines are usually
苯乙胺和苯乙醇胺代表肾上腺素合成酶的两大类配体,即苯乙醇胺N-甲基转移酶(PNMT; EC 2.1.1.28)。苯乙胺通常是竞争性抑制剂,具有(2S)-苯异丙胺(1)和(2S)-2-氨基四氢萘(3)中相对构型的异构体比其对映体更好。苯乙醇胺通常是PNMT的底物,此类酶更喜欢1R异构体,例如(1R)-苯基乙醇胺(5)。旋光性去氧麻黄碱(7和8),去甲伪麻黄碱(9和10)和2-氨基-1-四醇(13-16)用于研究苯基乙醇胺对PNMT活性位点结合的立体化学要求。尽管去甲肾上腺素(7和8)和去甲伪麻黄碱(9和10)的PNMT配体比2-氨基-1-四醇(13-16),(1R,2S)-(-)-去甲肾上腺素(7 )显示出一些作为PNMT底物的活性(Km = 1310 microM,Vmax = 0.22,100 x Vmax / Km = 0.017)。在2-amino-1-tetralols(13-16
Stereoselective synthesis of 1,2-amino alcohols by asymmetric borane reduction of α-oxoketoxime ethers
作者:Moriyasu Masui、Takayuki Shioiri
DOI:10.1016/s0040-4039(98)01019-3
日期:1998.7
Asymmetricreduction of α-oxoketoxime ethers with the reagents prepared in situ from trimethyl borate and chiral amino alcohols derived from either L-proline or α-pinene was investigated. Both cyclic and acyclic α-oxoketoxime ethers were reduced to afford the corresponding chiral 1,2-amino alcohols with high enantioselectivities.
Asymmetric reduction of keto oxime ethers using oxazaborolidine reagents. The enantioselective synthesis of cyclic amino alcohols
作者:Richard D. Tillyer、Charles Boudreau、David Tschaen、U.-H. Dolling、Paul J. Reider
DOI:10.1016/0040-4039(95)00788-e
日期:1995.6
Asymmetric reduction of keto oxime ethers 2 catalyzed by oxazaborolidine-borane complex 4 produces the cis aminoalcohols 1 efficiently and with high levels of diastereo- and enantioselectivity.