-
3
-
-
0002831359
-
-
Darrell, R. A.; Smith, F.; Stacey, M.; Tatlow, J. C. J. Chem. Soc. 1951, 2329.
-
(1951)
J. Chem. Soc.
, pp. 2329
-
-
Darrell, R.A.1
Smith, F.2
Stacey, M.3
Tatlow, J.C.4
-
4
-
-
10544224541
-
-
Ohnmacht, C.-J.; Russell, K.; Empfield, J. R.; Frank, C. A.; Gibson, K. H. et al. J. Med. Chem. 1996, 39, 4592.
-
(1996)
J. Med. Chem.
, vol.39
, pp. 4592
-
-
Ohnmacht, C.-J.1
Russell, K.2
Empfield, J.R.3
Frank, C.A.4
Gibson, K.H.5
-
5
-
-
0345109776
-
-
(a) Brieden, W.; Naughton, A.; Robins, K.; Shaw, N.; Tinschert, A.; Zimmermann, T. DE 197 35 802 A1, January 15, 1998. Hydrolysis of rac-2b with esterase from Candida lipolytica afforded (R)-1a (71% e.e.) and the unreacted (S)-2b (97% e.e., 59% yield, with respect to half of the starting amount), (b) Crosby, J.; Holt, R. A.; Pittam, J. D. WO 97/38124, October 16, 1997. The authors describe kinetic resolution of rac-2 (R=Me, Et, Bu, R′=Me) with a series of hydrolases with low selectivities, obtaining (R)-acid and (S)-ester in every case. Hydrolysis of rac-4b with PPL (80 wt %, 3 days) gave (S)-4b (19%, e.e. >95%)
-
(a) Brieden, W.; Naughton, A.; Robins, K.; Shaw, N.; Tinschert, A.; Zimmermann, T. DE 197 35 802 A1, January 15, 1998. Hydrolysis of rac-2b with esterase from Candida lipolytica afforded (R)-1a (71% e.e.) and the unreacted (S)-2b (97% e.e., 59% yield, with respect to half of the starting amount), (b) Crosby, J.; Holt, R. A.; Pittam, J. D. WO 97/38124, October 16, 1997. The authors describe kinetic resolution of rac-2 (R=Me, Et, Bu, R′=Me) with a series of hydrolases with low selectivities, obtaining (R)-acid and (S)-ester in every case. Hydrolysis of rac-4b with PPL (80 wt %, 3 days) gave (S)-4b (19%, e.e. >95%).
-
-
-
-
6
-
-
0001997457
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1990)
J. Org. Chem.
, vol.55
, pp. 5878
-
-
Moorlag, H.1
Kellogg, R.M.2
Kloosterman, M.3
Kaptein, B.4
Kamphuis, J.5
Shoemaker, H.E.6
-
7
-
-
37049086532
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1991)
J. Chem. Soc., Perkin Trans. 1
, pp. 653
-
-
Feichter, C.1
Faber, K.2
Griengl, H.3
-
8
-
-
33751391146
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1992)
J. Org. Chem.
, vol.57
, pp. 3525
-
-
Yee, C.1
Blythe, T.A.2
McNabb, T.J.3
Walts, A.E.4
-
9
-
-
0000638381
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1990)
J. Org. Chem.
, vol.55
, pp. 4643
-
-
Sugai, T.1
Kakeya, H.2
Ohta, H.3
-
10
-
-
0026503245
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1992)
Synthesis
, pp. 365
-
-
Yang, S.1
Hayden, W.2
Faber, K.3
Griengl, H.4
-
11
-
-
0004717729
-
-
Resolutions of α,α-disubstituted α-hydroxycarboxylic acid esters have been performed successfully with a series of enzymes: (a) Moorlag, H.; Kellogg, R. M.; Kloosterman, M.; Kaptein, B.; Kamphuis, J.; Shoemaker, H. E. J. Org. Chem. 1990, 55, 5878. (b) Feichter, C.; Faber, K.; Griengl, H. J. Chem. Soc., Perkin Trans. 1 1991, 653. (c) Yee, C.; Blythe, T. A.; McNabb, T. J.; Walts, A. E. J. Org. Chem. 1992, 57, 3525. (d) Sugai, T.; Kakeya, H.; Ohta, H. J. Org. Chem. 1990, 55, 4643. (f) Yang, S.; Hayden, W.; Faber, K.; Griengl, H. Synthesis 1992, 365. (g) Pottie, M.; Van der Eycken, J.; Vanewalle, M.; Dewanckele, J. M.; Röper, H. Tetrahedron Lett. 1989, 30, 5319.
-
(1989)
Tetrahedron Lett.
, vol.30
, pp. 5319
-
-
Pottie, M.1
Van Der Eycken, J.2
Vanewalle, M.3
Dewanckele, J.M.4
Röper, H.5
-
12
-
-
20644469267
-
-
For definition and calculation of E see: Chen, C.-H.; Fujimoto, Y.; Girdaukas, G.; Sih, C. J. J. Am. Chem. Soc. 1982, 104, 7294.
-
(1982)
J. Am. Chem. Soc.
, vol.104
, pp. 7294
-
-
Chen, C.-H.1
Fujimoto, Y.2
Girdaukas, G.3
Sih, C.J.4
-
14
-
-
0001639775
-
-
Ohta, H.; Kimura, Y.; Sugano, Y.; Sugai, T. Tetrahedron 1989, 45, 5469.
-
(1989)
Tetrahedron
, vol.45
, pp. 5469
-
-
Ohta, H.1
Kimura, Y.2
Sugano, Y.3
Sugai, T.4
-
15
-
-
0032474890
-
-
and references cited therein
-
Cipiciani, A.; Cittadini, M.; Fringuelli, F. Tetrahedron 1988, 54, 7883; and references cited therein.
-
(1988)
Tetrahedron
, vol.54
, pp. 7883
-
-
Cipiciani, A.1
Cittadini, M.2
Fringuelli, F.3
|