-
1
-
-
0026674657
-
-
For reviews of the enzyme-catalyzed acyl transfer, see: Faber, K.; Riva, S. Synthesis 1992, 895. Carrea, G.; Riva, S. Angew. Chem., Int. Ed. 2000, 39, 2226.
-
(1992)
Synthesis
, pp. 895
-
-
Faber, K.1
Riva, S.2
-
2
-
-
0041152088
-
-
For reviews of the enzyme-catalyzed acyl transfer, see: Faber, K.; Riva, S. Synthesis 1992, 895. Carrea, G.; Riva, S. Angew. Chem., Int. Ed. 2000, 39, 2226.
-
(2000)
Angew. Chem., Int. Ed.
, vol.39
, pp. 2226
-
-
Carrea, G.1
Riva, S.2
-
3
-
-
0034354748
-
-
For reviews of the nonenzymatic kinetic resolution, see: Spivey, A. C.; Maddaford, A.; Redgrave, A. J. Organic Prep. Proced. Int. 2000, 32, 331. Somfai, P. Angew. Chem., Int. Ed. Engl. 1997, 36, 2731.
-
(2000)
Organic Prep. Proced. Int.
, vol.32
, pp. 331
-
-
Spivey, A.C.1
Maddaford, A.2
Redgrave, A.J.3
-
4
-
-
0032491791
-
-
For reviews of the nonenzymatic kinetic resolution, see: Spivey, A. C.; Maddaford, A.; Redgrave, A. J. Organic Prep. Proced. Int. 2000, 32, 331. Somfai, P. Angew. Chem., Int. Ed. Engl. 1997, 36, 2731.
-
(1997)
Angew. Chem., Int. Ed. Engl.
, vol.36
, pp. 2731
-
-
Somfai, P.1
-
5
-
-
0035830558
-
-
Recent examples and references therein: Clapham, B.; Cho, C. W.; Janda, K. D. J. Org. Chem. 2001, 66, 868. Sekar, G.; Nishiyama, H. J. Am. Chem. Soc. 2001, 123, 3603. Spivey, A. C.; Fekner, T.; Spey, S. E. J. Org. Chem. 2000, 65, 3154.
-
(2001)
J. Org. Chem.
, vol.66
, pp. 868
-
-
Clapham, B.1
Cho, C.W.2
Janda, K.D.3
-
6
-
-
0034837162
-
-
Recent examples and references therein: Clapham, B.; Cho, C. W.; Janda, K. D. J. Org. Chem. 2001, 66, 868. Sekar, G.; Nishiyama, H. J. Am. Chem. Soc. 2001, 123, 3603. Spivey, A. C.; Fekner, T.; Spey, S. E. J. Org. Chem. 2000, 65, 3154.
-
(2001)
J. Am. Chem. Soc.
, vol.123
, pp. 3603
-
-
Sekar, G.1
Nishiyama, H.2
-
7
-
-
0034685863
-
-
Recent examples and references therein: Clapham, B.; Cho, C. W.; Janda, K. D. J. Org. Chem. 2001, 66, 868. Sekar, G.; Nishiyama, H. J. Am. Chem. Soc. 2001, 123, 3603. Spivey, A. C.; Fekner, T.; Spey, S. E. J. Org. Chem. 2000, 65, 3154.
-
(2000)
J. Org. Chem.
, vol.65
, pp. 3154
-
-
Spivey, A.C.1
Fekner, T.2
Spey, S.E.3
-
8
-
-
0000308108
-
-
Eliel, E. L., Ed.; Wiley & Sons: New York
-
The selectivity factor was determined using the following equation: s = ln[(1 - C)(1 - ee)]/ln[(1 - C)(1 + ee)], where C = conversion. Kagan, H. B.; Fiaud, J. C. In Topics in Stereochemistry; Eliel, E. L., Ed.; Wiley & Sons: New York, 1988; Vol. 18, p 249.
-
(1988)
Topics in Stereochemistry
, vol.18
, pp. 249
-
-
Kagan, H.B.1
Fiaud, J.C.2
-
9
-
-
0002621284
-
-
The 3β-Acetoxyetienic acid can be easily prepared from the commercially available pregnenolone acetate (Aldrich; 59.7USD/25 g): Staunton, J.; Eisenbraun, E. J. Org. Synth. 1962, 42, 4. Djerassi, C.; Hart, P. A.; Warawa, E. J. J. Am. Chem. Soc. 1964, 86, 78.
-
(1962)
Org. Synth.
, vol.42
, pp. 4
-
-
Staunton, J.1
Eisenbraun, E.J.2
-
10
-
-
0002178462
-
-
The 3β-Acetoxyetienic acid can be easily prepared from the commercially available pregnenolone acetate (Aldrich; 59.7USD/25 g): Staunton, J.; Eisenbraun, E. J. Org. Synth. 1962, 42, 4. Djerassi, C.; Hart, P. A.; Warawa, E. J. J. Am. Chem. Soc. 1964, 86, 78.
-
(1964)
J. Am. Chem. Soc.
, vol.86
, pp. 78
-
-
Djerassi, C.1
Hart, P.A.2
Warawa, E.J.3
-
11
-
-
84985520823
-
-
Neises, B.; Steglich, W. Angew. Chem., Int. Ed. Engl. 1978, 17, 522.
-
(1978)
Angew. Chem., Int. Ed. Engl.
, vol.17
, pp. 522
-
-
Neises, B.1
Steglich, W.2
-
12
-
-
0000149447
-
-
The utilities of 2-arylcyclohexanols as chiral auxiliaries in synthesis: Whitesell, J. K. Chem. Rev. 1992, 92, 953.
-
(1992)
Chem. Rev.
, vol.92
, pp. 953
-
-
Whitesell, J.K.1
-
13
-
-
0029117927
-
-
For reviews of the CH/π interaction, see: Nishio, M.; Umezawa, Y.; Hirota, M.; Takeuchi, Y. Tetrahedron 1995, 51, 8665. Nishio, M.; Umezawa, Y.; Hirota, M. The CH/π Interaction; Wiley-VCH: New York, 1998.
-
(1995)
Tetrahedron
, vol.51
, pp. 8665
-
-
Nishio, M.1
Umezawa, Y.2
Hirota, M.3
Takeuchi, Y.4
-
14
-
-
0029117927
-
-
Wiley-VCH: New York
-
For reviews of the CH/π interaction, see: Nishio, M.; Umezawa, Y.; Hirota, M.; Takeuchi, Y. Tetrahedron 1995, 51, 8665. Nishio, M.; Umezawa, Y.; Hirota, M. The CH/π Interaction; Wiley-VCH: New York, 1998.
-
The CH/π Interaction
, pp. 1998
-
-
Nishio, M.1
Umezawa, Y.2
Hirota, M.3
-
15
-
-
0035944205
-
-
Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 6903. Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8019. Matsugi, M.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8039.
-
(2001)
Tetrahedron Lett.
, vol.42
, pp. 6903
-
-
Matsugi, M.1
Itoh, K.2
Nojima, M.3
Hagimoto, Y.4
Kita, Y.5
-
16
-
-
0035813375
-
-
Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 6903. Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8019. Matsugi, M.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8039.
-
(2001)
Tetrahedron Lett.
, vol.42
, pp. 8019
-
-
Matsugi, M.1
Itoh, K.2
Nojima, M.3
Hagimoto, Y.4
Kita, Y.5
-
17
-
-
0035813408
-
-
Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 6903. Matsugi, M.; Itoh, K.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8019. Matsugi, M.; Nojima, M.; Hagimoto, Y.; Kita, Y. Tetrahedron Lett. 2001, 42, 8039.
-
(2001)
Tetrahedron Lett.
, vol.42
, pp. 8039
-
-
Matsugi, M.1
Nojima, M.2
Hagimoto, Y.3
Kita, Y.4
-
18
-
-
0041900774
-
-
note
-
The numbering positions on the steroid ring and hexane ring are respectively depicted by the positions of 3β-acetoxyetienic acid and 2-arylcyclohexanols before esterification for the simple discussion.
-
-
-
-
19
-
-
0025652123
-
-
The kinetic resolution of racemic alcohols by using the DCC: Chinchilla, R.; Najera, C.; Yus, M.; Heumann, A. Tetrahedron: Asymmetry 1990, 1, 851. Chinchilla, R.; Najera, C.; Yus, M.; Heumann, A. Tetrahedron: Asymmetry 1991, 2, 101.
-
(1990)
Tetrahedron: Asymmetry
, vol.1
, pp. 851
-
-
Chinchilla, R.1
Najera, C.2
Yus, M.3
Heumann, A.4
-
20
-
-
0025974425
-
-
The kinetic resolution of racemic alcohols by using the DCC: Chinchilla, R.; Najera, C.; Yus, M.; Heumann, A. Tetrahedron: Asymmetry 1990, 1, 851. Chinchilla, R.; Najera, C.; Yus, M.; Heumann, A. Tetrahedron: Asymmetry 1991, 2, 101.
-
(1991)
Tetrahedron: Asymmetry
, vol.2
, pp. 101
-
-
Chinchilla, R.1
Najera, C.2
Yus, M.3
Heumann, A.4
-
21
-
-
0343683426
-
-
The kinetic resolution of racemic carboxylic acids by using the DCC: Camps, P.; Perez, F.; Soldevilla, N. Tetrahedron: Asymmetry 1997, 8, 1877. Calmes, M.; Glot, C.; Michel, T.; Rolland, M.; Martinez, J. Tetrahedron: Asymmetry 2000, 11, 737.
-
(1997)
Tetrahedron: Asymmetry
, vol.8
, pp. 1877
-
-
Camps, P.1
Perez, F.2
Soldevilla, N.3
-
22
-
-
0034712183
-
-
The kinetic resolution of racemic carboxylic acids by using the DCC: Camps, P.; Perez, F.; Soldevilla, N. Tetrahedron: Asymmetry 1997, 8, 1877. Calmes, M.; Glot, C.; Michel, T.; Rolland, M.; Martinez, J. Tetrahedron: Asymmetry 2000, 11, 737.
-
(2000)
Tetrahedron: Asymmetry
, vol.11
, pp. 737
-
-
Calmes, M.1
Glot, C.2
Michel, T.3
Rolland, M.4
Martinez, J.5
-
23
-
-
0041900772
-
-
note
-
The chiral 3β-acetoxyetienic acid can be easily prepared from a commercially available pregnenolone acetate via the two steps; see: ref 5.
-
-
-
-
25
-
-
0001193783
-
-
D of the remaining 1i in the acylation process. Berti, G.; Macchia, B.; Macchia, F.; Monti, L. J. Org. Chem. 1968, 33, 4045.
-
(1968)
J. Org. Chem.
, vol.33
, pp. 4045
-
-
Berti, G.1
Macchia, B.2
Macchia, F.3
Monti, L.4
-
26
-
-
0002178462
-
-
Djerassi, C.; Hart, P. A.; Warawa, E. J. J. Am. Chem. Soc. 1964, 86, 78. Esser, P.; Buschmann, H.; Meyer-Stork, M.; Scharf, H.-D. Angew. Chem., Int. Ed. Engl. 1992, 31, 1190.
-
(1964)
J. Am. Chem. Soc.
, vol.86
, pp. 78
-
-
Djerassi, C.1
Hart, P.A.2
Warawa, E.J.3
-
27
-
-
33748239217
-
-
Djerassi, C.; Hart, P. A.; Warawa, E. J. J. Am. Chem. Soc. 1964, 86, 78. Esser, P.; Buschmann, H.; Meyer-Stork, M.; Scharf, H.-D. Angew. Chem., Int. Ed. Engl. 1992, 31, 1190.
-
(1992)
Angew. Chem., Int. Ed. Engl.
, vol.31
, pp. 1190
-
-
Esser, P.1
Buschmann, H.2
Meyer-Stork, M.3
Scharf, H.-D.4
-
28
-
-
0042902939
-
-
note
-
D of the corresponding 1j after the removal of the steroid moiety, see: ref 16.
-
-
-
-
29
-
-
0035800369
-
-
For recent reports on the participation of the CH/π attractive force, see Yamakawa, M.; Yamada, I.; Noyori, R. Angew. Chem., Int. Ed. 2001, 40, 2818. Noyori, R.; Yamakawa, M.; Hashiguchi, S. J. Org. Chem. 2001, 66, 7931.
-
(2001)
Angew. Chem., Int. Ed.
, vol.40
, pp. 2818
-
-
Yamakawa, M.1
Yamada, I.2
Noyori, R.3
-
30
-
-
0035977261
-
-
For recent reports on the participation of the CH/π attractive force, see Yamakawa, M.; Yamada, I.; Noyori, R. Angew. Chem., Int. Ed. 2001, 40, 2818. Noyori, R.; Yamakawa, M.; Hashiguchi, S. J. Org. Chem. 2001, 66, 7931.
-
(2001)
J. Org. Chem.
, vol.66
, pp. 7931
-
-
Noyori, R.1
Yamakawa, M.2
Hashiguchi, S.3
-
31
-
-
0041900770
-
-
note
-
2 = 8/1) to give 6.8 g of 3f (54.4%, 71% de) and 1.9 g of (1R, 2S)-1f (38.1%, 99% ee). The 3β-acetoxyetienic acid (457 mg, 3.8%) was recovered by the neutralization of the aqueous alkaline phase.
-
-
-
|