A Homochiral Poly(2‐oxazoline)‐based Membrane for Efficient Enantioselective Separation
作者:Fanmengjing Wang、David Pizzi、Yizhihao Lu、Kaiqiang He、Kristofer J. Thurecht、Matthew R. Hill、Philip J. Marriott、Mark M. Banaszak Holl、Kristian Kempe、Huanting Wang
DOI:10.1002/anie.202212139
日期:2023.2.13
S-Poly(2,4-dimethyl-2-oxazoline)-based membranes (S-PdMeOx/GO) are prepared via a simple solution-based method on porous substrates for chiral separation. The S-PdMeOx-based network within the graphene oxide scaffold induced homochirality in the membrane. The resulting S-PdMeOx-based membrane displays excellent enantioselectivity in separating racemic limonene mixtures.
基于S -Poly(2,4-dimethyl-2-oxazoline) 的膜 ( S -PdMeOx/GO) 是通过一种简单的基于溶液的方法在多孔基材上制备的,用于手性分离。氧化石墨烯支架内基于S -PdMeOx的网络在膜中诱导了同手性。由此产生的基于S -PdMeOx 的膜在分离外消旋柠檬烯混合物方面表现出出色的对映选择性。
The enantiomeric specificity of the antihypertensive activity of 1-(phenylthio)-2-aminopropane, a synthetic substrate analog for dopamine .beta.-monooxygenase
作者:Heath H. Herman、Philip A. Husain、James E. Colbert、Margaret M. Schweri、Stanley H. Pollock、Lydia C. Fowler、Sheldon W. May
DOI:10.1021/jm00107a031
日期:1991.3
We have found that (R,S)-1-(phenylthio)-2-aminopropane (4a), a synthetic alternate substrate for the terminal enzyme of norepinephrine biosynthesis, dopamine beta-monooxygenase (DBM), is both an indirect sympathomimetic and a potent antihypertensive agent in spontaneously hypertensive rats. We demonstrate herein that there is a distinct enantiospecific difference in the activities of (R)-1-(phenylthio)-2-aminopropane (4b) and (S)-1-(phenylthio)-2-aminopropane (4c). We find that 4c, the more potent DBM substrate analogue, exhibits both the indirect sympathomimetic activity and the antihypertensive activity previously observed for the racemate and inhibits the active transport of catecholamines at the nerve terminal. In contrast, 4b, which is less potent as a DBM substrate or as an inhibitor of catecholamine uptake, does not exhibit an indirect sympathomimetic effect and is not an effective antihypertensive agent. These results suggest that the greater selectivity of the S enantiomer for both the catecholamine reuptake transporter and the target enzyme DBM accounts for its greater potency as an indirect-acting sympathomimetic agent as well as its activity as an antihypertensive agent. These results are also consistent with the hypothesized mechanism of action of this class of sulfur-containing DBM substrate analogues.
HERMAN, HEATH H.;HUSAIN, PHILIP A.;COLBERT, JAMES E.;SCHWERI, MARGARET M.+, J. MED. CHEM., 34,(1991) N, C. 1082-1085
作者:HERMAN, HEATH H.、HUSAIN, PHILIP A.、COLBERT, JAMES E.、SCHWERI, MARGARET M.+
DOI:——
日期:——
HPLC-based method for determination of absolute configuration of .alpha.-chiral amines
作者:Philip A. Husain、Jayanta. Debnath、Sheldon W. May
DOI:10.1021/ac00058a025
日期:1993.5.15
rotomer of the SMPA adduct and application of simple rules correlates absoluteconfiguration and HPLC elution order. A key aspect of our method is that it can be used to determine absoluteconfiguration without using enantiomeric standards of the amine analytes. Furthermore, it is of utmost significance that our method can also be used to determine absoluteconfiguration even when only one analyte enantiomer