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3
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2542423220
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(c) Decursin
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(c) Decursin ( 1 ) was also isolated from the fruit of Peucedanum terebinthaceum Fisher et Turcz, see: Yook C.S., Kim H.S., Kim J.T. J. Pharmaceut. Soc. Korea. 30:1986;73.
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0031683979
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In addition to cytotoxicity and PKC activation, anti-Helicobacter pylori activity has also been reported, see:
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0000546031
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Johnson, R.A.1
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85031141197
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Catalytic asymmetric epoxidations using enones protected with other protecting groups such as Bn and PMB provided poor results due to their low solubility in THF
-
Catalytic asymmetric epoxidations using enones protected with other protecting groups such as Bn and PMB provided poor results due to their low solubility in THF.
-
-
-
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25
-
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0042761970
-
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For general reviews of asymmetric epoxidation of electron-deficient olefin, see: (a) Porter M.J., Skidmore J. Chem. Commun. 2002;1215 (b) Nemoto T., Ohshima T., Shibasaki M. J. Synth. Org. Chem. Jpn. 60:2002;94. and references therein.
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0036486779
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For general reviews of asymmetric epoxidation of electron-deficient olefin, see: (a). and references therein
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For general reviews of asymmetric epoxidation of electron-deficient olefin, see: (a) Porter M.J., Skidmore J. Chem. Commun. 2002;1215 (b) Nemoto T., Ohshima T., Shibasaki M. J. Synth. Org. Chem. Jpn. 60:2002;94. and references therein.
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For reviews, see: (a)
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For reviews, see: (a) Shibasaki M., Sasai H., Arai T. Angew. Chem. Int. Ed. Engl. 36:1997;1236 (b) Shibasaki M., Yoshikawa N. Chem. Rev. 102:2002;2187.
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0030964434
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For catalytic asymmetric epoxidations of enones catalyzed by multifunctional asymmetric catalysts, see: (a) Bougauchi M., Watanabe S., Arai T., Sasai H., Shibasaki M. J. Am. Chem. Soc. 119:1997;2329 (b) Watanabe S., Kobayashi Y., Arai T., Sasai H., Bougauchi M., Shibasaki M. Tetrahedron Lett. 39:1998;7353 (c) Watanabe S., Arai T., Sasai H., Bougauchi M., Shibasaki M. J. Org. Chem. 63:1998;8090 (d) Daikai K., Kamura M., Inanaga J. Tetrahedron Lett. 39:1998;7321.
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30
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0032191537
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For catalytic asymmetric epoxidations of enones catalyzed by multifunctional asymmetric catalysts, see: (a) Bougauchi M., Watanabe S., Arai T., Sasai H., Shibasaki M. J. Am. Chem. Soc. 119:1997;2329 (b) Watanabe S., Kobayashi Y., Arai T., Sasai H., Bougauchi M., Shibasaki M. Tetrahedron Lett. 39:1998;7353 (c) Watanabe S., Arai T., Sasai H., Bougauchi M., Shibasaki M. J. Org. Chem. 63:1998;8090 (d) Daikai K., Kamura M., Inanaga J. Tetrahedron Lett. 39:1998;7321.
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31
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0032514846
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For catalytic asymmetric epoxidations of enones catalyzed by multifunctional asymmetric catalysts, see: (a) Bougauchi M., Watanabe S., Arai T., Sasai H., Shibasaki M. J. Am. Chem. Soc. 119:1997;2329 (b) Watanabe S., Kobayashi Y., Arai T., Sasai H., Bougauchi M., Shibasaki M. Tetrahedron Lett. 39:1998;7353 (c) Watanabe S., Arai T., Sasai H., Bougauchi M., Shibasaki M. J. Org. Chem. 63:1998;8090 (d) Daikai K., Kamura M., Inanaga J. Tetrahedron Lett. 39:1998;7321.
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32
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0032192283
-
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For catalytic asymmetric epoxidations of enones catalyzed by multifunctional asymmetric catalysts, see: (a)
-
For catalytic asymmetric epoxidations of enones catalyzed by multifunctional asymmetric catalysts, see: (a) Bougauchi M., Watanabe S., Arai T., Sasai H., Shibasaki M. J. Am. Chem. Soc. 119:1997;2329 (b) Watanabe S., Kobayashi Y., Arai T., Sasai H., Bougauchi M., Shibasaki M. Tetrahedron Lett. 39:1998;7353 (c) Watanabe S., Arai T., Sasai H., Bougauchi M., Shibasaki M. J. Org. Chem. 63:1998;8090 (d) Daikai K., Kamura M., Inanaga J. Tetrahedron Lett. 39:1998;7321.
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0344601724
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The absolute configuration of epoxide 6 was determined by transformation to the authentic natural compounds (+)-4 and (+)-5 . See: (a) Lemmich J., Nielsen E. Tetrahedron Lett. 1969;3 (b) Harada I., Hirose Y., Nakazaki M. Tetrahedron Lett. 1968;5463.
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Lemmich, J.1
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34
-
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0006778960
-
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The absolute configuration of epoxide
-
The absolute configuration of epoxide 6 was determined by transformation to the authentic natural compounds (+)-4 and (+)-5 . See: (a) Lemmich J., Nielsen E. Tetrahedron Lett. 1969;3 (b) Harada I., Hirose Y., Nakazaki M. Tetrahedron Lett. 1968;5463.
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Harada, I.1
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Nakazaki, M.3
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36
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85031144060
-
-
3 can be purchased from Kojundo Chemical Laboratory Co., Ltd., 5-1-28, Chiyoda, Sakado-shi, Saitama 350-0214, Japan (fax: +81-492-84-1351)
-
3 can be purchased from Kojundo Chemical Laboratory Co., Ltd., 5-1-28, Chiyoda, Sakado-shi, Saitama 350-0214, Japan (fax: +81-492-84-1351).
-
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39
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0037065320
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(a) Nemoto T., Kakei H., Gnanadesikan V., Tosaki S.-., Ohshima T., Shibasaki M. J. Am. Chem. Soc. 124:2002;14544
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Shibasaki, M.6
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41
-
-
85031130386
-
-
Following is the proposed mechanism for the transformation of 18 to 19:
-
-
-
-
42
-
-
85031135121
-
-
24 was determined by chiral stationary phase HPLC analysis after conversion to the corresponding TMS ether
-
The enantiomeric excess of 24 was determined by chiral stationary phase HPLC analysis after conversion to the corresponding TMS ether.
-
-
-
-
44
-
-
85031136904
-
-
Conversion of decursinol ( 4 ) to decursinol angelate ( 2 ) has been reported, see Refs. 8 and 10
-
Conversion of decursinol ( 4 ) to decursinol angelate ( 2 ) has been reported, see Refs. 8 and 10.
-
-
-
-
45
-
-
0033592480
-
-
For representative examples of the catalytic asymmetric epoxidation of enones, see: (a) Corey E.J., Zhang F.-Y. Org. Lett. 1:1999;1287 (b) Yu H.B., Zheng X.F., Lin Z.M., Hu Q.S., Huang W.S., Pu L. J. Org. Chem. 64:1999;8149 (c) Elston C.L., Jackson R.F.W., MacDonald S.J.F., Murray P.J. Angew. Chem. Int. Ed. Engl. 36:1997;410 (d) Enders D., Zhu J., Raabe G. Angew. Chem. Int. Ed. Engl. 35:1996;1725 (e) Juliá S., Masana J., Vega J.C. Angew. Chem. Int. Ed. Engl. 19:1980;929.
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46
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For representative examples of the catalytic asymmetric epoxidation of enones, see: (a) Corey E.J., Zhang F.-Y. Org. Lett. 1:1999;1287 (b) Yu H.B., Zheng X.F., Lin Z.M., Hu Q.S., Huang W.S., Pu L. J. Org. Chem. 64:1999;8149 (c) Elston C.L., Jackson R.F.W., MacDonald S.J.F., Murray P.J. Angew. Chem. Int. Ed. Engl. 36:1997;410 (d) Enders D., Zhu J., Raabe G. Angew. Chem. Int. Ed. Engl. 35:1996;1725 (e) Juliá S., Masana J., Vega J.C. Angew. Chem. Int. Ed. Engl. 19:1980;929.
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47
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0030895780
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For representative examples of the catalytic asymmetric epoxidation of enones, see: (a) Corey E.J., Zhang F.-Y. Org. Lett. 1:1999;1287 (b) Yu H.B., Zheng X.F., Lin Z.M., Hu Q.S., Huang W.S., Pu L. J. Org. Chem. 64:1999;8149 (c) Elston C.L., Jackson R.F.W., MacDonald S.J.F., Murray P.J. Angew. Chem. Int. Ed. Engl. 36:1997;410 (d) Enders D., Zhu J., Raabe G. Angew. Chem. Int. Ed. Engl. 35:1996;1725 (e) Juliá S., Masana J., Vega J.C. Angew. Chem. Int. Ed. Engl. 19:1980;929.
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Jackson, R.F.W.2
MacDonald, S.J.F.3
Murray, P.J.4
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48
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0029785064
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For representative examples of the catalytic asymmetric epoxidation of enones, see: (a) Corey E.J., Zhang F.-Y. Org. Lett. 1:1999;1287 (b) Yu H.B., Zheng X.F., Lin Z.M., Hu Q.S., Huang W.S., Pu L. J. Org. Chem. 64:1999;8149 (c) Elston C.L., Jackson R.F.W., MacDonald S.J.F., Murray P.J. Angew. Chem. Int. Ed. Engl. 36:1997;410 (d) Enders D., Zhu J., Raabe G. Angew. Chem. Int. Ed. Engl. 35:1996;1725 (e) Juliá S., Masana J., Vega J.C. Angew. Chem. Int. Ed. Engl. 19:1980;929.
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Enders, D.1
Zhu, J.2
Raabe, G.3
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49
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84985609389
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For representative examples of the catalytic asymmetric epoxidation of enones, see: (a)
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For representative examples of the catalytic asymmetric epoxidation of enones, see: (a) Corey E.J., Zhang F.-Y. Org. Lett. 1:1999;1287 (b) Yu H.B., Zheng X.F., Lin Z.M., Hu Q.S., Huang W.S., Pu L. J. Org. Chem. 64:1999;8149 (c) Elston C.L., Jackson R.F.W., MacDonald S.J.F., Murray P.J. Angew. Chem. Int. Ed. Engl. 36:1997;410 (d) Enders D., Zhu J., Raabe G. Angew. Chem. Int. Ed. Engl. 35:1996;1725 (e) Juliá S., Masana J., Vega J.C. Angew. Chem. Int. Ed. Engl. 19:1980;929.
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Juliá, S.1
Masana, J.2
Vega, J.C.3
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50
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0002712785
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Williamson, N.M.8
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