-
1
-
-
0011255114
-
-
Department of Chemistry
-
Department of Chemistry.
-
-
-
-
2
-
-
0011215772
-
-
Department of Central Nervous System Drug Discovery
-
Department of Central Nervous System Drug Discovery.
-
-
-
-
15
-
-
0028334524
-
-
McKay M.C., Dworetzky S.I., Meanwell N.A., Olesen S.-P., Reinhart P.H., Levitan I.B., Adelman J.P., Gribkoff V.K. J. Neurophysiol. 71:1994;1873.
-
(1994)
J. Neurophysiol.
, vol.71
, pp. 1873
-
-
McKay, M.C.1
Dworetzky, S.I.2
Meanwell, N.A.3
Olesen, S.-P.4
Reinhart, P.H.5
Levitan, I.B.6
Adelman, J.P.7
Gribkoff, V.K.8
-
16
-
-
0028073296
-
-
Xu X., Tsai T.D., Wang J., Lee E.W., Lee K.S. J. Pharm. Exp. Ther. 271:1994;362.
-
(1994)
J. Pharm. Exp. Ther.
, vol.271
, pp. 362
-
-
Xu, X.1
Tsai, T.D.2
Wang, J.3
Lee, E.W.4
Lee, K.S.5
-
17
-
-
0028148850
-
-
Edwards G., Niederste-Hollenberg A., Schneider J., Noack Th., Weston A.H. Br. J. Pharmacol. 113:1994;1538.
-
(1994)
Br. J. Pharmacol.
, vol.113
, pp. 1538
-
-
Edwards, G.1
Niederste-Hollenberg, A.2
Schneider, J.3
Noack, Th.4
Weston, A.H.5
-
19
-
-
0030598665
-
-
Meanwell N.A., Sit S.-Y., Gao J., Boissard C.G., Lum-Ragan J., Dworetzky S.I., Gribkoff V.K. Bioorg. Med. Chem. Lett. 6:1996;1641.
-
(1996)
Bioorg. Med. Chem. Lett.
, vol.6
, pp. 1641
-
-
Meanwell, N.A.1
Sit, S.-Y.2
Gao, J.3
Boissard, C.G.4
Lum-Ragan, J.5
Dworetzky, S.I.6
Gribkoff, V.K.7
-
22
-
-
0011240462
-
-
It was found that the enolate of 6 is quite sensitive to even trace amounts of dissolved oxygen and readily undergoes autooxidation, which results in signicficantly reduced asymmetric induction. In order to prevent hydroxylation by molecular oxygen, asymmetric hydroxylation of indolone 6 with the oxaziridines 7 was performed in degassed dry THF under an argon atmosphere
-
It was found that the enolate of 6 is quite sensitive to even trace amounts of dissolved oxygen and readily undergoes autooxidation, which results in signicficantly reduced asymmetric induction. In order to prevent hydroxylation by molecular oxygen, asymmetric hydroxylation of indolone 6 with the oxaziridines 7 was performed in degassed dry THF under an argon atmosphere.
-
-
-
-
23
-
-
0011229834
-
-
Previously, chiral shift reagents have been used to determine the enantiomeric excess of chiral alcohols as described in 21. However, for this series of chiral alcohols, we have found that the use of the chiral solvent (L)-trifluoromethylphenyl carbinol can be used in place of chiral shift reagents to effectively determine the enantiomeric excess of 4c and 4e
-
Previously, chiral shift reagents have been used to determine the enantiomeric excess of chiral alcohols as described in . However, for this series of chiral alcohols, we have found that the use of the chiral solvent (L)-trifluoromethylphenyl carbinol can be used in place of chiral shift reagents to effectively determine the enantiomeric excess of 4c and 4e.
-
-
-
-
24
-
-
0011176856
-
-
In order to establish the absolute stereochemistry of the asymmetric hydroxylation protocol, the absolute configuration of a chiral 5-bromo-3-hydroxyindolone analogue was determined by single crystal X-ray analysis. Thus, oxidation of the potassium enolate of 5-bromo-3-(5-chloro-2-methoxyphenyl)-1,3-dihydro-2H-indol-2-one with (1S)-(+)-(10-camphorsulfonyl)oxaziridine afforded (3R)-(-)-5-bromo-3-(5-chloro-2-methoxyphenyl)-1,3-dihydro-3-hydroxy-2H-indol-2-one
-
In order to establish the absolute stereochemistry of the asymmetric hydroxylation protocol, the absolute configuration of a chiral 5-bromo-3-hydroxyindolone analogue was determined by single crystal X-ray analysis. Thus, oxidation of the potassium enolate of 5-bromo-3-(5-chloro-2-methoxyphenyl)-1,3-dihydro-2H-indol-2-one with (1S)-(+)-(10-camphorsulfonyl)oxaziridine afforded (3R)-(-)-5-bromo-3-(5-chloro-2-methoxyphenyl)-1,3-dihydro-3-hydroxy-2H-indol-2-one.
-
-
-
-
25
-
-
0027161159
-
-
Butler A., Tsunoda S., McCobb D.P., Wei A., Salkoff L. Science. 261:1993;221.
-
(1993)
Science
, vol.261
, pp. 221
-
-
Butler, A.1
Tsunoda, S.2
McCobb, D.P.3
Wei, A.4
Salkoff, L.5
-
27
-
-
9344266364
-
-
Gribkoff V.K., Lum-Ragan J.T., Boissard C.G., Post-Munson D.J., Meanwell N.A., Starrett J.E. Jr., Kozlowski E.S., Romine J.L., Trojnacki J.T., McKay M.C., Zhong J., Dworetzky S.I. Mol. Pharmacol. 50:1996;206.
-
(1996)
Mol. Pharmacol.
, vol.50
, pp. 206
-
-
Gribkoff, V.K.1
Lum-Ragan, J.T.2
Boissard, C.G.3
Post-Munson, D.J.4
Meanwell, N.A.5
Starrett J.E., Jr.6
Kozlowski, E.S.7
Romine, J.L.8
Trojnacki, J.T.9
McKay, M.C.10
Zhong, J.11
Dworetzky, S.I.12
|