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In: Feldman D., Glorieux F.H., and Pike J.W. (Eds). Vitamin D (1997), Academic, New York, NY
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2
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0003822885
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Norman A.W., Bouillon R., and Thomasset M. (Eds), University of California Riverside, Riverside, CA
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In: Norman A.W., Bouillon R., and Thomasset M. (Eds). Vitamin D Endocrine System: Structural, Biological, Genetic and Clinical Aspects (2000), University of California Riverside, Riverside, CA
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4
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67650516729
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For reviews on this topic, see
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For reviews on this topic, see:
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8
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35148817862
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Chapelon A.S., Moraleda D., Rodriguez R., Ollivier C., and Santelli M. Tetrahedron 63 (2007) 11511-11616
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0037040656
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and reference therein
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Okamura W.H., Zhu G.-D., Hill D.K., Thomas R.J., Ringe K., Borchardt D.B., Norman A.W., and Mueller L.J. J. Org. Chem. 67 (2002) 1637-1650 and reference therein
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12
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67650555356
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note
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Steroidal numbering is used.
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16
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0026708345
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30
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67650513262
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trans-Hydrindanone precursors of CD-ring system of vitamin D have previously been obtained from meso-3, for premilary communications see
-
trans-Hydrindanone precursors of CD-ring system of vitamin D have previously been obtained from meso-3, for premilary communications see:
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33
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67650543818
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For reviews, see
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For reviews, see:
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37
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0141518530
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12 position increased to 4.4 times the affinity of the related calcitriol analogs for the vitamin D receptor (VDR).
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12 position increased to 4.4 times the affinity of the related calcitriol analogs for the vitamin D receptor (VDR). Gonzalès-Avión X.C., and Mouriño A. Org. Lett. 5 (2003) 2291-2293
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38
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67650561089
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note
-
First, we considered a ketone-directed epoxidation of anti meso-3. Attempts performed with meta-chloroperbenzoic acid at rt led to a 50:50 mixture of two monoepoxides diastereoisomers, resulting from a total lack of facial selectivity.
-
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40
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0035806338
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Sabitha G., Satheesh Babu R., Rajkumar M., Srinivas Reddy Ch., and Yadav J.S. Tetrahedron Lett. 42 (2001) 3955-3958
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42
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0037040656
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N2 cycloalkylation of the corresponding seco-iodo compound, see:
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N2 cycloalkylation of the corresponding seco-iodo compound, see:. Okamura W.H., Zhu G.-D., Hill D.K., Thomas R.J., Ringe K., Borchardt D.B., Norman A.W., and Mueller L.J. J. Org. Chem. 67 (2002) 1637-1650
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Hill, D.K.3
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Ringe, K.5
Borchardt, D.B.6
Norman, A.W.7
Mueller, L.J.8
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44
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67650533744
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-
note
-
Separation of both diastereoisomers at the previous stage should provided a better er. Unfortunatly, attemps to remove the minor stereoisomer by flash chromatography were unfruitful. Efforts to solve this problem are still under studies.
-
-
-
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45
-
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67650534913
-
-
note
-
The enatiomeric ratio (er) was calculated from the chiral GC values of (+)-4, 8a and 8 as detailed in experimental section.
-
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47
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0033472712
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Blakemore P.R., Grzywacz P., Kocienski P.J., Marczak S., and Wicha J. Pol. J. Chem. 73 (1999) 1209-1217
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55
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67650516728
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For reviews on the chemistry of xanthates, see
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For reviews on the chemistry of xanthates, see:
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60
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0003123493
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Renaud P., and Sibi M. (Eds), Wiley-VCH GmbH, Weinheim, Germany
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Zard S.Z. In: Renaud P., and Sibi M. (Eds). Radical in Organic Synthesis. 1st ed. (2001), Wiley-VCH GmbH, Weinheim, Germany 90
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Zard, S.Z.1
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67650540729
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For examples of cyclization of an α-carbonyl radical generated from the corresponding xanthate, see
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For examples of cyclization of an α-carbonyl radical generated from the corresponding xanthate, see:
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65
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67650543817
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Ester and malonate xanthate derivatives have been reported to be synthetized by reaction of their respective enolates with diethyl bisdithiocarbonate in 50-58% yield
-
Ester and malonate xanthate derivatives have been reported to be synthetized by reaction of their respective enolates with diethyl bisdithiocarbonate in 50-58% yield.
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74
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0037063537
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*, see:
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*, see:. Chatgilialoglu C., Ferreri C., Guerra M., Timokhin V., Froudakis G., and Gimisis T. J. Am. Chem. Soc 124 (2002) 10765-10772
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