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0013566526
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(-)-Dimethyl 2,3-O-isopropylidene L-tartrate is commercially available from Fluka
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b. Mash, E. A.; Nelson, K. A.; Van Deusen, S., Hemperly, S. B. Org. Synth., Col. Vol VIII, 155. (-)-Dimethyl 2,3-O-isopropylidene L-tartrate is commercially available from Fluka.
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33
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37049084556
-
-
(3R)-2,5-diethoxy-3-isopropyl-3,6-dihydropyrazine was prepared by treatment of cyclo[(2R)-val-gly with triethyloxonium tetrafluoroborate. Alternatively, both enantiomers of the related 2,5-dimethoxy-3-isopropyl-3,6-dihydropyrazine can be purchased from E. Merck
-
(3R)-2,5-diethoxy-3-isopropyl-3,6-dihydropyrazine was prepared by treatment of cyclo[(2R)-val-gly] with triethyloxonium tetrafluoroborate. See Rose, J.E., Leeson, P.D.; Gani, D. J. Chem. Soc. Perkin Trans. 1 1995, 157. Alternatively, both enantiomers of the related 2,5-dimethoxy-3-isopropyl-3,6-dihydropyrazine can be purchased from E. Merck.
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Rose, J.E.1
Leeson, P.D.2
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36
-
-
0013620504
-
-
The excess of Schöllkopf's reagent could be recovered, and showed no racemization
-
The excess of Schöllkopf's reagent could be recovered, and showed no racemization.
-
-
-
-
37
-
-
0013594977
-
-
1H NMR spectrum of the mixture of adducts
-
1H NMR spectrum of the mixture of adducts.
-
-
-
-
38
-
-
0013595319
-
-
note
-
2).
-
-
-
-
39
-
-
0032506943
-
-
Kobayashi, S.; Furuta, T.; Hayashi, T.; Nishijima, M.; Hanada, K. J. Am. Chem. Soc. 1998, 120. 908.
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Kobayashi, S.1
Furuta, T.2
Hayashi, T.3
Nishijima, M.4
Hanada, K.5
-
40
-
-
0013620302
-
-
We have also observed an excellent diastereoselection in the additions of an excess of 7b to 2,3-O-isopropylidene-D-erythrose. Quintela, J. M.; Ruiz, M.; Ojea, V.; Ruanova, T. M., communication to the 18th ECHS. Rouen, France. September 1998.
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(1998)
18th ECHS.
-
-
Quintela, J.M.1
Ruiz, M.2
Ojea, V.3
Ruanova, T.M.4
-
41
-
-
16144363956
-
-
See for example: Shilvock, J. P.; Whealley, J. R.; Davis, B.; Nash, R. J.; Griffiths, R. C.; Jones, M. G.; MÜller. M.; Crook, S.; Watkin, D. J.; Smith, C.; Besra, G. S.; Brennan, P. J.; Fleet, G. W. J. Tetrahedron Lett. 1996, 37, 8569.
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Shilvock, J.P.1
Whealley, J.R.2
Davis, B.3
Nash, R.J.4
Griffiths, R.C.5
Jones, M.G.6
Müller, M.7
Crook, S.8
Watkin, D.J.9
Smith, C.10
Besra, G.S.11
Brennan, P.J.12
Fleet, G.W.J.13
-
42
-
-
0013566527
-
-
13C NMR and FABMS spectral data obtained for this material were also in accordance with the literature values (see references 8 and 9)
-
13C NMR and FABMS spectral data obtained for this material were also in accordance with the literature values (see references 8 and 9).
-
-
-
-
43
-
-
0025233737
-
-
Other trihydroxypipecolic acids have shown important biological activities
-
Tong, M. K.; Blumenthal, E. M.; Ganem, B. Tetrahedron Lett. 1990, 31, 1683. Other trihydroxypipecolic acids have shown important biological activities: Di Bello. I. C.; Dorling, P.; Fellows, L.; Winchester, B. FEBS Lett. 1984, 776, 61.
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Tong, M.K.1
Blumenthal, E.M.2
Ganem, B.3
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44
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-
0021705445
-
-
Tong, M. K.; Blumenthal, E. M.; Ganem, B. Tetrahedron Lett. 1990, 31, 1683. Other trihydroxypipecolic acids haveshown important biological activities: Di Bello. I. C.; Dorling, P.; Fellows, L.; Winchester, B. FEBS Lett. 1984, 776, 61.
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-
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Di Bello, I.C.1
Dorling, P.2
Fellows, L.3
Winchester, B.4
-
45
-
-
0013595320
-
-
note
-
2O).
-
-
-
|