-
1
-
-
21644447487
-
-
Sun, K.; Li, X.; Li, W.; Wang, J.; Liu, J.; Sha, Y. Chem. Pharm. Bull. 2004, 52, 1483-1486.
-
(2004)
Chem. Pharm. Bull.
, vol.52
, pp. 1483-1486
-
-
Sun, K.1
Li, X.2
Li, W.3
Wang, J.4
Liu, J.5
Sha, Y.6
-
2
-
-
25444476860
-
-
Wen, Y.; He, S.; Xue, K.; Cao, F. Zhong Cao Yao 1986, 17, 122.
-
(1986)
Zhong Cao Yao
, vol.17
, pp. 122
-
-
Wen, Y.1
He, S.2
Xue, K.3
Cao, F.4
-
4
-
-
0033857076
-
-
Yin, R-B.; He, Z.-S.; Ye, Y. J. Nat. Prod. 2000, 63, 1164-1165.
-
(2000)
J. Nat. Prod.
, vol.63
, pp. 1164-1165
-
-
Yin, R.-B.1
He, Z.-S.2
Ye, Y.3
-
7
-
-
0000550687
-
-
For books and reviews on 1,3-dipolar cycloadditions of carbonyl ylides, see: (a) Padwa, A.; Weingarten, M. D. Chem. Rev. 1996, 96, 223-269
-
(1996)
Chem. Rev.
, vol.96
, pp. 223-269
-
-
Padwa, A.1
Weingarten, M.D.2
-
9
-
-
57249093643
-
-
(c) Hodgson, D. M.; Pierard, F. Y. T. M.; Stupple, P. A. Chem. Soc. Rev. 2001, 30, 50-61
-
(2001)
Chem. Soc. Rev.
, vol.30
, pp. 50-61
-
-
Hodgson, D.M.1
Pierard, F.Y.T.M.2
Stupple, P.A.3
-
11
-
-
34547168156
-
-
Evans, P. A., Ed.; Wiley-VCH: Weinheim, Chapter 19
-
(e) Savizky, R. M.; Austin, D. J. In Modern Rhoditim-Cata/yzed Organic Reactions; Evans, P. A., Ed.; Wiley-VCH: Weinheim, 2005. Chapter 19.
-
(2005)
Modern Rhoditim-Cata/yzed Organic Reactions
-
-
Savizky, R.M.1
Austin, D.J.2
-
12
-
-
61349132696
-
-
Padwa, A., Pearson, W. H., Eds.; John Wiley & Sons: Hoboken, Chapter 4
-
For a book and reviews on the syntheses of natural products by a carbonyl ylide cycloaddition strategy, see: (a) McMills, M. C.; Wright, D. In Synthetic Applications of 1, 3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products; Padwa, A., Pearson, W. H., Eds.; John Wiley & Sons: Hoboken, 2003. Chapter 4
-
(2003)
Synthetic Applications of 1, 3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products
-
-
McMills, M.C.1
Wright, D.2
-
16
-
-
39949084476
-
-
(e) Singh, V.; Krishna, U. M.; Vikrant; Trivedi, G. K. Tetrahedron 2008, 64, 3405-3428
-
(2008)
Tetrahedron
, vol.64
, pp. 3405-3428
-
-
Singh, V.1
Krishna, U.M.2
Vikrant3
Trivedi, G.K.4
-
18
-
-
33749006267
-
-
For other more recent works, see: (a) Geng, Z.; Chen, B.; Chiu, P. Angew. Chem., Int. Ed. 2006, 45, 6197-6201
-
(2006)
Angew. Chem., Int. Ed.
, vol.45
, pp. 6197-6201
-
-
Geng, Z.1
Chen, B.2
Chiu, P.3
-
19
-
-
33845447826
-
-
(b) Hirata, Y.; Nakamura, S.; Watanabe, N.; Kataoka, O.; Kurosaki, T.; Anada, M.; Kitagaki, S.; Shiro, M.; Hashimoto, S. Chem. Eur. J. 2006, 12, 8898-8925
-
(2006)
Chem. Eur. J.
, vol.12
, pp. 8898-8925
-
-
Hirata, Y.1
Nakamura, S.2
Watanabe, N.3
Kataoka, O.4
Kurosaki, T.5
Anada, M.6
Kitagaki, S.7
Shiro, M.8
Hashimoto, S.9
-
23
-
-
47049122357
-
-
(f) Kim, C. H.; Jang, K. P.; Choi, S. Y.; Chung, Y. K.; Lee, E. Angew. Chem., Int. Ed. 2008, 47, 4009-4011.
-
(2008)
Angew. Chem., Int. Ed.
, vol.47
, pp. 4009-4011
-
-
Kim, C.H.1
Jang, K.P.2
Choi, S.Y.3
Chung, Y.K.4
Lee, E.5
-
24
-
-
77950795829
-
-
In classification of reaction integration, tandem reaction is categorized as a time and space integration by the Yoshida group. Suga, S.; Yamada, D.; Yoshida, J. Chem. Lett. 2010, 39, 404-406.
-
(2010)
Chem. Lett.
, vol.39
, pp. 404-406
-
-
Suga, S.1
Yamada, D.2
Yoshida, J.3
-
25
-
-
0030840478
-
-
(a) Hodgson, D. M.; Stupple, P. A.; Johnstone, C Tetrahedron Lett. 1997, 38, 6471-6472
-
(1997)
Tetrahedron Lett.
, vol.38
, pp. 6471-6472
-
-
Hodgson, D.M.1
Stupple, P.A.2
Johnstone, C.3
-
27
-
-
0035887159
-
-
(c) Hodgson, D. M.; Stupple, P. A.; Pierard, F. Y. T. M.; Labande, A. H.; Johnstone, C Chem. Eur. J. 2001, 7, 4465-4476
-
(2001)
Chem. Eur. J.
, vol.7
, pp. 4465-4476
-
-
Hodgson, D.M.1
Stupple, P.A.2
Pierard, F.Y.T.M.3
Labande, A.H.4
Johnstone, C.5
-
28
-
-
0037462399
-
-
(d) Hodgson, D. M.; Glen, R.; Grant, G. H.; Redgrave, A. J. J. Org. Chem. 2003, 68, 581-586
-
(2003)
J. Org. Chem.
, vol.68
, pp. 581-586
-
-
Hodgson, D.M.1
Glen, R.2
Grant, G.H.3
Redgrave, A.J.4
-
29
-
-
0043032895
-
-
(e) Hodgson, D. M.; Labande, A. H.; Pierard, F. Y. T. M.; Expósito Castro, M. Á. J. Org. Chem. 2003, 68, 6153-6159
-
(2003)
J. Org. Chem.
, vol.68
, pp. 6153-6159
-
-
Hodgson, D.M.1
Labande, A.H.2
Pierard, F.Y.T.M.3
Expósito Castro, M.Á.4
-
30
-
-
1842631435
-
-
(f) Hodgson, D. M.; Brückl, T.; Glen, R.; Labande, A. H.; Seiden, D. A; Dossetter, A. G.; Redgrave, A.J. Proc. Natl. Acad. Sci. U.S.A. 2004, 101, 5450-5454
-
(2004)
Proc. Natl. Acad. Sci. U.S.A.
, vol.101
, pp. 5450-5454
-
-
Hodgson, D.M.1
Brückl, T.2
Glen, R.3
Labande, A.H.4
Seiden, D.A.5
Dossetter, A.G.6
Redgrave, A.J.7
-
31
-
-
65549106304
-
-
(g) Hodgson, D. M.; Glen, R.; Redgrave, A. J. Tetrahedron: Asymmetry 2009, 20, 754-757.
-
(2009)
Tetrahedron: Asymmetry
, vol.20
, pp. 754-757
-
-
Hodgson, D.M.1
Glen, R.2
Redgrave, A.J.3
-
32
-
-
0033576992
-
-
(a) Kitagaki, S.; Anada, M.; Kataoka, O.; Matsuno, K.; Umeda, C.; Watanabe, N.; Hashimoto, S. J. Am. Chem. Soc. 1999, 121, 1417-1418
-
(1999)
J. Am. Chem. Soc.
, vol.121
, pp. 1417-1418
-
-
Kitagaki, S.1
Anada, M.2
Kataoka, O.3
Matsuno, K.4
Umeda, C.5
Watanabe, N.6
Hashimoto, S.7
-
33
-
-
0034730008
-
-
(b) Kitagaki, S.; Yasugahira, M.; Anada, M.; Nakajima, M.; Hashimoto, S. Tetrahedron Lett. 2000, 41, 5931-5935
-
(2000)
Tetrahedron Lett.
, vol.41
, pp. 5931-5935
-
-
Kitagaki, S.1
Yasugahira, M.2
Anada, M.3
Nakajima, M.4
Hashimoto, S.5
-
34
-
-
34547178927
-
-
(c) Tsutsui, H.; Shimada, N.; Abe, T.; Anada, M.; Nakajima, M.; Nakamura, S.; Nambu, H.; Hashimoto, S. Adv. Synth. Catal. 2007, 349, 521-526
-
(2007)
Adv. Synth. Catal.
, vol.349
, pp. 521-526
-
-
Tsutsui, H.1
Shimada, N.2
Abe, T.3
Anada, M.4
Nakajima, M.5
Nakamura, S.6
Nambu, H.7
Hashimoto, S.8
-
35
-
-
54049087840
-
-
(d) Shimada, N.; Anada, M.; Nakamura, S.; Nambu, H.; Tsutsui, H.; Hashimoto, S. Org. Lett. 2008, 10, 3603-3606
-
(2008)
Org. Lett.
, vol.10
, pp. 3603-3606
-
-
Shimada, N.1
Anada, M.2
Nakamura, S.3
Nambu, H.4
Tsutsui, H.5
Hashimoto, S.6
-
36
-
-
65549146503
-
-
(e) Nambu, H.; Hikime, M.; Krishnamurthi, J.; Kamiya, M.; Shimada, N.; Hashimoto, S. Tetrahedron Lett. 2009, 50, 3675-3678
-
(2009)
Tetrahedron Lett.
, vol.50
, pp. 3675-3678
-
-
Nambu, H.1
Hikime, M.2
Krishnamurthi, J.3
Kamiya, M.4
Shimada, N.5
Hashimoto, S.6
-
37
-
-
77951829381
-
-
(f) Kurosaki, Y.; Shimada, N.; Anada, M.; Nambu, H.; Hashimoto, S. Bull. Korean Chem. Soc. 2010, 31, 694-696.
-
(2010)
Bull. Korean Chem. Soc.
, vol.31
, pp. 694-696
-
-
Kurosaki, Y.1
Shimada, N.2
Anada, M.3
Nambu, H.4
Hashimoto, S.5
-
38
-
-
0037132621
-
-
Suga and co-workers reported enantioselective 1,3-dipolar cycloadditions of carbonyl ylides using chiral Lewis acid catalysts: (a) Suga, H.; Inoue, K.; Inoue, S.; Kakehi, A. J. Am. Chem. Soc. 2002, 124, 14836-14837
-
(2002)
J. Am. Chem. Soc.
, vol.124
, pp. 14836-14837
-
-
Suga, H.1
Inoue, K.2
Inoue, S.3
Kakehi, A.4
-
39
-
-
11844286891
-
-
(b) Suga, H.; Inoue, K.; Inoue, S.; Kakehi, A.; Shiro, M. J. Org Chem. 2005, 70, 47-56
-
(2005)
J. Org Chem.
, vol.70
, pp. 47-56
-
-
Suga, H.1
Inoue, K.2
Inoue, S.3
Kakehi, A.4
Shiro, M.5
-
40
-
-
35548978110
-
-
(c) Suga, H.; Ishimoto, D.; Higuchi, S.; Ohtsuka, M.; Arikawa, T.; Tsuchida, T.; Kakehi, A; Baba, T. Org. Lett. 2007, 9, 4359-4362
-
(2007)
Org. Lett.
, vol.9
, pp. 4359-4362
-
-
Suga, H.1
Ishimoto, D.2
Higuchi, S.3
Ohtsuka, M.4
Arikawa, T.5
Tsuchida, T.6
Kakehi, A.7
Baba, T.8
-
41
-
-
77949567244
-
-
(d) Suga, H.; Highchi, S.; Ohtsuka, M.; Ishimoto, D.; Arikawa, T.; Hashimoto, Y.; Misawa, S.; Tsuchida, T.; Kakehi, A; Baba, T. Tetrahedron 2010, 66, 3070-3089.
-
(2010)
Tetrahedron
, vol.66
, pp. 3070-3089
-
-
Suga, H.1
Highchi, S.2
Ohtsuka, M.3
Ishimoto, D.4
Arikawa, T.5
Hashimoto, Y.6
Misawa, S.7
Tsuchida, T.8
Kakehi, A.9
Baba, T.10
-
42
-
-
77954283118
-
-
Very recently, Iwasawa and co-workers reported a catalytic asymmetric [3+2] cycloaddition of platinum-containing carbonyl ylides with vinyl ethers. Ishida, K.; Kusama, H.; Iwasawa, N. J. Am. Chem. Soc. 2010, 132, 8842-8843.
-
(2010)
J. Am. Chem. Soc.
, vol.132
, pp. 8842-8843
-
-
Ishida, K.1
Kusama, H.2
Iwasawa, N.3
-
43
-
-
0037164672
-
-
4 (4) in enantioselective aminations, see: (a) Yamawaki, M.; Tsutsui, H.; Kitagaki, S.; Anada, M.; Hashimoto, S. Tetrahedron Lett. 2002, 43, 9561-9564
-
(2002)
Tetrahedron Lett.
, vol.43
, pp. 9561-9564
-
-
Yamawaki, M.1
Tsutsui, H.2
Kitagaki, S.3
Anada, M.4
Hashimoto, S.5
-
44
-
-
34547843706
-
-
(b) Yamawaki, M.; Tanaka, M.; Abe, T.; Anada, M.; Hashimoto, S. Heterocycles 2007, 72, 709-721
-
(2007)
Heterocycles
, vol.72
, pp. 709-721
-
-
Yamawaki, M.1
Tanaka, M.2
Abe, T.3
Anada, M.4
Hashimoto, S.5
-
45
-
-
36049029718
-
-
(c) Tanaka, M.; Kurosaki, Y.; Washio, T.; Anada, M.; Hashimoto, S. Tetrahedron Lett. 2007, 48, 8799-8802
-
(2007)
Tetrahedron Lett.
, vol.48
, pp. 8799-8802
-
-
Tanaka, M.1
Kurosaki, Y.2
Washio, T.3
Anada, M.4
Hashimoto, S.5
-
46
-
-
62049083460
-
-
(d) Anada, M.; Tanaka, M.; Shimada, N.; Nambu, H.; Yamawaki, M.; Hashimoto, S. Tetrahedron 2009, 65, 3069-3077.
-
(2009)
Tetrahedron
, vol.65
, pp. 3069-3077
-
-
Anada, M.1
Tanaka, M.2
Shimada, N.3
Nambu, H.4
Yamawaki, M.5
Hashimoto, S.6
-
47
-
-
70450206041
-
-
4 (4), where the X-ray crystal structure of 4 was determined: Lindsay, V. N. G.; Lin, W.; Charette, A. B. J. Am. Chem. Soc. 2009, 131, 16383-16385.
-
(2009)
J. Am. Chem. Soc.
, vol.131
, pp. 16383-16385
-
-
Lindsay, V.N.G.1
Lin, W.2
Charette, A.B.3
-
48
-
-
70349464815
-
-
4 (4). (a) Sato, S.; Shibuya, M.; Kanoh, N.; Iwabuchi, Y. J. Org. Chem. 2009, 74, 7522-7524
-
(2009)
J. Org. Chem.
, vol.74
, pp. 7522-7524
-
-
Sato, S.1
Shibuya, M.2
Kanoh, N.3
Iwabuchi, Y.4
-
49
-
-
70349920648
-
-
(b) Sato, S.; Shibuya, M.; Kanoh, N.; Iwabuchi, Y. Chem. Commun. 2009, 6264-6266.
-
(2009)
Chem. Commun.
, pp. 6264-6266
-
-
Sato, S.1
Shibuya, M.2
Kanoh, N.3
Iwabuchi, Y.4
-
50
-
-
77956133889
-
-
Shimada, N.; Hanari, T.; Kurosaki, Y.; Takeda, K.; Anada, M.; Nambu, H.; Shiro, M.; Hashimoto, S.J. Org. Chem. 2010, 75, 6039-6042.
-
(2010)
J. Org. Chem.
, vol.75
, pp. 6039-6042
-
-
Shimada, N.1
Hanari, T.2
Kurosaki, Y.3
Takeda, K.4
Anada, M.5
Nambu, H.6
Shiro, M.7
Hashimoto, S.8
-
51
-
-
33749856973
-
-
(a) Nakamura, S.; Sugano, Y.; Kikuchi, F.; Hashimoto, S. Angew. Chem., Int. Ed. 2006, 45, 6532-6535
-
(2006)
Angew. Chem., Int. Ed.
, vol.45
, pp. 6532-6535
-
-
Nakamura, S.1
Sugano, Y.2
Kikuchi, F.3
Hashimoto, S.4
-
52
-
-
33947136846
-
-
(b) Snider, B. B.; Wu, X.; Nakamura, S.; Hashimoto, S. Org. Lett. 2007, 9, 873-874.
-
(2007)
Org. Lett.
, vol.9
, pp. 873-874
-
-
Snider, B.B.1
Wu, X.2
Nakamura, S.3
Hashimoto, S.4
-
53
-
-
70449101166
-
-
Recently, Peterson and co-workers reported that compound 2 could be produced from glucose, glycine, and ferulic acid in 3% yield in a simulated backing model system (10% moisture at 200 °C for 15 min). They also reported that 2 suppressed the bacterial lipopolysaccharide-mediated expression of two prototypical pro-inflammatory genes, inducible nitric oxide synthase and cyclooxygenase (COX)-2. Jiang, D.; Chiaro, C.; Maddali, P.; Prabhu, K. S.; Peterson, D. G. J. Agric Food Chem. 2009, 57, 9932-9943.
-
(2009)
J. Agric Food Chem.
, vol.57
, pp. 9932-9943
-
-
Jiang, D.1
Chiaro, C.2
Maddali, P.3
Prabhu, K.S.4
Peterson, D.G.5
-
54
-
-
85030591825
-
-
4 (4)
-
4 (4).
-
-
-
-
55
-
-
85030589902
-
-
The absolute configuration of ent-8 was determined to be (1S, 5S) by comparison of the sign of the optical rotation with the data reported in Ref. 16
-
The absolute configuration of ent-8 was determined to be (1S, 5S) by comparison of the sign of the optical rotation with the data reported in Ref. 16.
-
-
-
-
56
-
-
0037118362
-
-
Hodgson and co-workers reported exo-selective alkene hydrogenation of 8-oxablcyclo[3.2.1]oct-6-en-2-one derivatives, (a) Hodgson, D. M.; Avery, T. D.; Donohue, A.C. Org. Lett. 2002, 4, 1809-1811
-
(2002)
Org. Lett.
, vol.4
, pp. 1809-1811
-
-
Hodgson, D.M.1
Avery, T.D.2
Donohue, A.C.3
-
57
-
-
10044237972
-
-
(b) Hodgson, D.M.; Le Strat, F.; Avery, T. D.; Donohue, A. C.; Brtickl, T.J. Org. Chem. 2004, 69, 8796-8803.
-
(2004)
J. Org. Chem.
, vol.69
, pp. 8796-8803
-
-
Hodgson, D.M.1
Le Strat, F.2
Avery, T.D.3
Donohue, A.C.4
Brtickl, T.5
-
58
-
-
33845455052
-
-
2NO, often referred to as Fremy's salt, has been used in the preparation of o- and p-benzoquinones, naphthoquinones, and some polycondensed quinones and in the oxidation of indolines. For a review, see: (a) Zimmer, H.; Lankin, D. C.; Horgan, S. W. Chem. Rev. 1971, 71, 229-246; For recent examples of oxidation with Fremy's salt used In the total syntheses of natural products, see:
-
(1971)
Chem. Rev.
, vol.71
, pp. 229-246
-
-
Zimmer, H.1
Lankin, D.C.2
Horgan, S.W.3
-
59
-
-
58649118388
-
-
(b) Alvarez-Manzaneda, E.; Chahboun, R.; Cabrera, E.; Alvarez, E.; Haidour, A; Ramos, J. M.; Alvarez-Manzaneda, R.; Hmamouchi, M.; Es-Samti, H. Chem. Commun. 2009, 592-594
-
(2009)
Chem. Commun.
, pp. 592-594
-
-
Alvarez-Manzaneda, E.1
Chahboun, R.2
Cabrera, E.3
Alvarez, E.4
Haidour, A.5
Ramos, J.M.6
Alvarez-Manzaneda, R.7
Hmamouchi, M.8
Es-Samti, H.9
-
60
-
-
65449179478
-
-
(c) Nielsen, L. B.; Slamet, R.; Wege, D. Tetrahedron 2009, 65, 4569-4577
-
(2009)
Tetrahedron
, vol.65
, pp. 4569-4577
-
-
Nielsen, L.B.1
Slamet, R.2
Wege, D.3
-
61
-
-
70349656462
-
-
(d) Ishii, S.; Fujii, M.; Akita, H. Chem. Pharm. Bull. 2009, 57, 1103-1106
-
(2009)
Chem. Pharm. Bull.
, vol.57
, pp. 1103-1106
-
-
Ishii, S.1
Fujii, M.2
Akita, H.3
-
62
-
-
75749138063
-
-
(e) Inoue, K.; Ishlkawa, Y.; Nishiyama, S. Org. Lett. 2010, 12, 436-439.
-
(2010)
Org. Lett.
, vol.12
, pp. 436-439
-
-
Inoue, K.1
Ishlkawa, Y.2
Nishiyama, S.3
-
64
-
-
85030573946
-
-
3 (1.0 equiv) in acetone at room temperature for 12 h gave a mixture of non-selectlvely methylated products, bis-methylated product 16 and substrate 15.
-
3 (1.0 equiv) in acetone at room temperature for 12 h gave a mixture of non-selectlvely methylated products, bis-methylated product 16 and substrate 15.
-
-
-
-
65
-
-
0001314965
-
-
Cacchi, S.; Morera, E.; Ortar, G. Tetrahedron Lett. 1984, 25, 4821-4824.
-
(1984)
Tetrahedron Lett.
, vol.25
, pp. 4821-4824
-
-
Cacchi, S.1
Morera, E.2
Ortar, G.3
-
66
-
-
84980126260
-
-
(a) Kuhn, M.; Keller-Juslén, C.; von Wartburg, A. Helv. Chim. Acta 1969, 52, 944-947
-
(1969)
Helv. Chim. Acta
, vol.52
, pp. 944-947
-
-
Kuhn, M.1
Keller-Juslén, C.2
Von Wartburg, A.3
-
67
-
-
0022504993
-
-
(b) Thurston, L S.; Irie, H.; Tani, S.; Han, F.-S.; Liu, Z.-C; Cheng, Y.-C.; Lee, K.-H. J. Med. Chem. 1986, 29, 1547-1550
-
(1986)
J. Med. Chem.
, vol.29
, pp. 1547-1550
-
-
Thurston, L.S.1
Irie, H.2
Tani, S.3
Han, F.-S.4
Liu, Z.-C.5
Cheng, Y.-C.6
Lee, K.-H.7
-
68
-
-
0025853134
-
-
(c) Klein, L. L.; Yeung, C M.; Chu, D. T.; McDonald, E. J.; Clement, J. J.; Plattner, J. J. J. Med. Chem. 1991, 34, 984-992
-
(1991)
J. Med. Chem.
, vol.34
, pp. 984-992
-
-
Klein, L.L.1
Yeung, C.M.2
Chu, D.T.3
McDonald, E.J.4
Clement, J.J.5
Plattner, J.J.6
-
69
-
-
0033812998
-
-
(d) Kamal, A.; Laxman, N.; Ramesh, G. Bioorg. Med. Chem. Lett. 2000, 10, 2059-2062
-
(2000)
Bioorg. Med. Chem. Lett.
, vol.10
, pp. 2059-2062
-
-
Kamal, A.1
Laxman, N.2
Ramesh, G.3
-
70
-
-
0141922084
-
-
(e) Kamal, A.; Kumar, B. A.; Arlfuddin, M. Tetrahedron Lett. 2003, 44, 8457-8459.
-
(2003)
Tetrahedron Lett.
, vol.44
, pp. 8457-8459
-
-
Kamal, A.1
Kumar, B.A.2
Arlfuddin, M.3
-
73
-
-
85030579648
-
-
The enantiomeric purity of the synthetic material 1 was determined to be 95% ee by comparison of the HPLC retention time with a racemic sample of 1, which was prepared according to the literature. See Ref. 4b.
-
The enantiomeric purity of the synthetic material 1 was determined to be 95% ee by comparison of the HPLC retention time with a racemic sample of 1, which was prepared according to the literature. See Ref. 4b.
-
-
-
|