Osamu Kitagawa

1985

Studies on Organic Fluorine Compounds. XLV. Synthesis and Regioselective Substitution Reaction of 3-Trifluoromethylfuran

KAWADA, KOSUKE., Kitagawa, O. & KOBAYASHI, YOSHIRO., 1985, ： : Chemical and Pharmaceutical Bulletin. 33, 9, p. 3670-3674

研究成果: Article

Fluorine Compounds

Substitution reactions

n-butyllithium

20 引用 (Scopus)

Studies on Organic Fluorine Compounds. XLVII. Synthesis of Trifluoromethylated Sugars through the Aldol Reaction of 2-Trimethylsilyloxy-4-trifluoromethylfuran

SAWADA, KOSUKE., Kitagawa, O., TAGUCHI, TAKEO., HANZAWA, YUJI., KOBAYASHI, YOSHIRO. & IITAKA, YOICHI., 1985, ： : Chemical and Pharmaceutical Bulletin. 33, 10, p. 4216-4222

研究成果: Article

Fluorine Compounds

Sugars

Lewis Acids

X ray analysis

Aldehydes

12 引用 (Scopus)

Synthesis and Regioselective Substitution Reaction of 3-Trifluoromethylfuran.

Kawada, K., Kitagawa, O. & Taguchi, T., 1985 9 1, ： : Chem. Pharm. Bull.. 33, p. 3670-3674

研究成果: Article

Synthesis of -Difluorocarboxylic Acid Derivatives through the Claisen Rearrangement of 1,1-Difluoro-1-alkane-3-ols.

Taguchi, T., Morikawa, T., Kitagawa, O., Mishima, T. & Kobayashi, Y., 1985 11 1, ： : Chem. Pharm. Bull.. 33, p. 5137-5140

研究成果: Article

Synthesis of Trifuluoromethylated Sugars through the Aldol Reaction of 2-Trimethylsiloxy-4-trifluoromethylfuran.

Kawada, K., Kitagawa, O., Taguchi, T., Hanzawa, Y., Kobayashi, Y. & Iitaka, Y., 1985 10 1, ： : Chem. Pharm. Bull.. 33, p. 4216-4222

研究成果: Article

Synthesis of β,β-Difluorocarboxylic Acid Derivatives through the Claisen Rearrangement of 1,1-Difluoro-1-alkane-3-ols.

Taguchi, T., Morikawa, T., Kitagawa, O., Mishima, T. & Kobayashi, Y., 1985, ： : Chemical and Pharmaceutical Bulletin. 33, 11, p. 5137-5140

研究成果: Article

1986

103 引用 (Scopus)

Synthesis of 2,2-difluoroesters by iododifluoroacetate-copper with organic halides

Taguchi, T., Kitagawa, O., Morikawa, T., Nishiwaki, T., Uehara, H., Endo, H. & Kobayashi, Y., 1986, ： : Tetrahedron Letters. 27, 50, p. 6103-6106 4 p.

研究成果: Article

Iodides

Copper

103 引用 (Scopus)

Synthesis of 2,2-Difluoroesters by Iododifluoroacetate-Copper with Organic Halides.

Taguchi, T., Kitagawa, O., Morikawa, T., Nishiwaki, T., Uehara, H., Endo, H. & Kobayashi, Y., 1986 11 10, ： : Tetrahedron Lett.. 27, p. 6103-6106

研究成果: Article

1988

112 引用 (Scopus)

Aldol reaction of iododifluoroacetate-Zn and 2,2-difluoroketene silyl acetal

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1988, ： : Tetrahedron Letters. 29, 15, p. 1803-1806 4 p.

研究成果: Article

Acetals

Iodides

Galactose

Aldehydes

3-hydroxybutanal

112 引用 (Scopus)

Aldol Reaction of Iododifluoroacetate-Zn and 2,2-Difluoroketene Silyl Acetal.

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1988 4 10, ： : Tetrahedron Lett.. 29, p. 1803-1806

研究成果: Article

106 引用 (Scopus)

Synthesis of 3,3-difluoro-2-azetidinones and 2,3-dideoxy-2,2-difluoro-3-amino-sugars through the reformatsky reaction of difluoroacetate with imine

Taguchi, T., Kitagawa, O., Suda, Y., Ohkawa, S., Hashimoto, A., Iitaka, Y. & Kobayashi, Y., 1988, ： : Tetrahedron Letters. 29, 41, p. 5291-5294 4 p.

研究成果: Article

Amino Sugars

Imines

Acetals

Derivatives

Esters

Synthesis of 3,3-Difluoro-2-Azetidinones and 2,3-Dideoxy-2,2-difluoro-3-aminosugars through the Reformatsky Reaction of Difluoroacetate with Imine.

Taguchi, T., Kitagawa, O., Suda, Y., Ohkawa, S., Hashimoto, A., Iitaka, Y. & Kobayashi, Y., 1988 10 10, ： : Tetrahedron Lett.. 29, p. 5291-5294

研究成果: Article

1989

(Methyl difluoroacetate)copper Reagent. Remarkable Solvent Effect on the 19F-NMR Spectrum, Stability and Reactivity.

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1989 3 10, ： : Chem. Lett.. p. 389-392

研究成果: Article

1990

Atom-transfer Reaction of Difluoroiodoacetate.

Kitagawa, O., Miura, A., Kobayashi, Y. & Taguchi, T., 1990 6 10, ： : Chem. Lett.. p. 1011-1014

研究成果: Article

Michael Addition of 2,2-Difluoroketene Silyl Acetal. Preparation of 4,4-Difluoroglutamic Acid and 5,5-Difluorolysine.

Kitagawa, O., Hashimoto, A., Kobayashi, Y. & Taguchi, T., 1990 8 10, ： : Chem. Lett.. p. 1307-1310

研究成果: Article

1991

Effect of Ti(Oi-Pr)4 on Stereoselectiviy of Halocyclization of 2-Substituted 4-Pentenoic Acid and 4-Penten-1-ol.

Kitagawa, O., Sato, T. & Taguchi, T., 1991 1 10, ： : Chem. Lett.. p. 177-180

研究成果: Article

1992

A Facile -Iodination Reaction of Unsaturated Amides.

Kitagawa, O., Hanano, T., Inoue, T. & Taguchi, T., 1992 2 1, ： : Tetrahedron Lett.. 33, p. 2167-2170

研究成果: Article

23 引用 (Scopus)

A facile α-iodination reaction of unsaturated amides

Kitagawa, O., Hanano, T., Hirata, T., Inoue, T. & Taguchi, T., 1992 3 3, ： : Tetrahedron Letters. 33, 10, p. 1299-1302 4 p.

研究成果: Article

Amides

gamma-collidine

62 引用 (Scopus)

Enantioselective halocyclization reaction using a chiral titanium complex

Kitagawa, O., Hanano, T., Tanabe, K., Shiro, M. & Taguchi, T., 1992, ： : Journal of the Chemical Society, Chemical Communications. 14, p. 1005-1007 3 p.

研究成果: Article

glycolic acid

Titanium

Acids

62 引用 (Scopus)

Enantioselective Halocyclization Reaction using a Chiral Titanium Complex.

Kitagawa, O., Hanano, T., Tanabe, K., Shiro, M. & Taguchi, T., 1992 5 15, ： : Chem. Commun.. p. 1005-1007

研究成果: Article

35 引用 (Scopus)

Ionic iodocarbocyclization reaction

Kitagawa, O., Inoue, T. & Taguchi, T., 1992 4 14, ： : Tetrahedron Letters. 33, 16, p. 2167-2170 4 p.

研究成果: Article

35 引用 (Scopus)

Ionic Iodocarbocyclization Reaction.

Kitagawa, O., Inoue, T. & Taguchi, T., 1992 3 1, ： : Tetrahedron Lett. 33, p. 2167-2170

研究成果: Article

1993

Asymetric Synthesis of -Amino Acids through -Iodination of Chiral Unsaturated Carboxamides and Stereoselective Iodolactonization.

Kitagawa, O., Hanano, T., Kikuchi, N. & Taguchi, T., 1993 3 1, ： : Tetrahedron Lett.. 34, p. 2165-2168

研究成果: Article

39 引用 (Scopus)

Asymmetric synthesis of α-amino acids through α-iodination of chiral unsaturated carboxamides and stereoselective iodolactonization

Kitagawa, O., Hanano, T., Kikuchi, N. & Taguchi, T., 1993 3 26, ： : Tetrahedron Letters. 34, 13, p. 2165-2168 4 p.

研究成果: Article

Iodides

Lactones

Amides

Amino Acids

pyrrolidine

55 引用 (Scopus)

Ionic iodocarbocyclization reactions of 4-alkenyl- and 4-alkynylmalonate derivatives

Kitagawa, O., Inoue, T., Hirano, K. & Taguchi, T., 1993, ： : Journal of Organic Chemistry. 58, 11, p. 3106-3112 7 p.

研究成果: Article

Malonates

Derivatives

Cyclopentanes

Cyclization

Spiro Compounds

55 引用 (Scopus)

Ionic Iodocarbocyclization Reactions of 4-Alkenyl- and 4-Alkynylmalonate Derivatives.

Kitagawa, O., Inoue, T., Hirano, K. & Taguchi, T., 1993 3 1, ： : J. Org. Chem.. 58, p. 3106-3112

研究成果: Article

1994

24 引用 (Scopus)

Diastereoselective iodocarbocyclization of 4-pentenylmalonate derivatives: Application to cyclosarkomycin synthesis

Kitagawa, O., Inoue, T. & Taguchi, T., 1994 2 14, ： : Tetrahedron Letters. 35, 7, p. 1059-1062 4 p.

研究成果: Article

Derivatives

24 引用 (Scopus)

Diastereoselective Iodocarbocyclization of 4-Pentenylmalonate Derivatives: Application to Cyclosarkomycin Synthesis.

Kitagawa, O., Inoue, T. & Taguchi, T., 1994 3 1, ： : Tetrahedron Lett.. 35, p. 1059-1062

研究成果: Article

1995

A Mild and Highly Chemoselective -Iodination of N-Allylic Carboxamides and Lactams.

Kitagawa, O., Kikuchi, N., Hanano, T., Aoki, K., Yamazaki, T., Okada, M. & Taguchi, T., 1995 8 1, ： : J. Org. Chem.. 60, p. 7161-7165

研究成果: Article

18 引用 (Scopus)

A mild and highly chemoselective α-iodination of N-allylic carboxamides and lactams

Kitagawa, O., Kikuchi, N., Hanano, T., Aoki, K., Yamazaki, T., Okada, M. & Taguchi, T., 1995, ： : The Journal of Organic Chemistry. 60, 22, p. 7161-7165 5 p.

研究成果: Article

Lactams

Amides

Stereoselectivity

Iodides

Iodine

42 引用 (Scopus)

Catalytic asymmetric iodocarbocyclization reaction

Inoue, T., Kitagawa, O., Ochiai, O., Shiro, M. & Taguchi, T., 1995 12 18, ： : Tetrahedron Letters. 36, 51, p. 9333-9336 4 p.

研究成果: Article

Enantioselectivity

Titanium

Derivatives

Cyclopentanes

X rays

42 引用 (Scopus)

Catalytic Asymmetric Iodocarbocyclization Reaction.

Inoue, T., Kitagawa, O., Ochiai, O., Shiro, M. & Taguchi, T., 1995 12 15, ： : Tetrahedron Lett.. 36, p. 9333-9336

研究成果: Article

25 引用 (Scopus)

Diastereoselective iodocarbocyclization reaction of 8-phenylmenthyl allylmalonate: An efficient preparation of a synthetic intermediate of cyclopropane amino acids

Inoue, T., Kitagawa, O., Ochiai, O. & Taguchi, T., 1995, ： : Tetrahedron: Asymmetry. 6, 3, p. 691-692 2 p.

研究成果: Article

cyclopropane

amino acids

Amino acids

esters

Esters

25 引用 (Scopus)

Diastereoselective Iodocarbocyclization Reaction of 8-Phenylmenthyl Allylmalonate: An Efficient Preparation of a Synthetic Intermediate of Cyclopropane Amino Acids.

Inoue, T., Kitagawa, O., Ochiai, O. & Taguchi, T., 1995 3 15, ： : Tetrahedron: Asymmetry. 6, p. 691-692

研究成果: Article

23 引用 (Scopus)

Diels-Alder reaction of N-allylic enamides and lactam derivatives through iodine mediated activation

Kitagawa, O., Aoki, K., Inoue, T. & Taguchi, T., 1995 1 23, ： : Tetrahedron Letters. 36, 4, p. 593-596 4 p.

研究成果: Article

Lactams

Lewis Acids

Iodine

Chemical activation

Derivatives

23 引用 (Scopus)

Diels-Alder Reaction of N-Allylic Enamides and Lactam Derivatives through Iodine-mediated Activation.

Kitagawa, O., Aoki, K., Inoue, T. & Taguchi, T., 1995 2 15, ： : Tetrahedron Lett.. 36, p. 593-596

研究成果: Article

26 引用 (Scopus)

Enantioselective iodocarbocyclization of 4-alkenylmalonate derivatives using a chiral titanium complex

Inoue, T., Kitagawa, O., Kurumizawa, S., Ochiai, O. & Taguchi, T., 1995 2 27, ： : Tetrahedron Letters. 36, 9, p. 1479-1482 4 p.

研究成果: Article

Cyclopentanes

Titanium

Derivatives

26 引用 (Scopus)

Enantioselective Iodocarbocyclization of 4-Alkenylmalonate Derivatives Using a Chiral Titanium Complex.

Inoue, T., Kitagawa, O., Kurumi, S., Ochiai, O. & Taguchi, T., 1995 2 15, ： : Tetrahedron Lett.. 36, p. 1479-1482

研究成果: Article

9 引用 (Scopus)

Iodocarbocyclization reaction

Taguchi, T., Kitagawa, O. & Inoue, T., 1995 9, ： : Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry. 53, 9, p. 770-779 10 p.

研究成果: Article

Enantioselectivity

Derivatives

Cyclopentanes

Nucleophiles

Titanium

Structual Analysis of -Turn Mimics Containing a Substituted 6-Aminocaproic Acid Linker.

Kitagawa, O., V, D., Velde, E., Dutta, D., Morton, M., Takusagawa, F. & Aube, J., 1995 10 1, ： : J. Am. Chem. Soc.. 117, p. 5169-5178

研究成果: Article

41 引用 (Scopus)

Structural analysis of β-turn mimics containing a substituted 6-aminocaproic acid linker

Kitagawa, O., Kitagawa, O., Dutta, D., Morton, M., Takusagawa, F. & Aube, J., 1995, ： : Journal of the American Chemical Society. 117, 19, p. 5169-5178 10 p.

研究成果: Article

Aminocaproic Acid

Structural analysis

Stereochemistry

Stereoisomerism

Acids

1996

13 引用 (Scopus)

A mild method for generation of p-methoxybenzyl cation through NIS-mediated activation of p-methoxybenzyl 4-pentenyl ether

Okada, M., Kitagawa, O., Fujita, M. & Taguchi, T., 1996 6 10, ： : Tetrahedron. 52, 24, p. 8135-8142 8 p.

研究成果: Article

Ether

Cations

Chemical activation

Ethers

Alcohols

13 引用 (Scopus)

A Mild Method for Generation of p-Methoxybenzyl Cation through NIS-mediated Activation of p-Methoxybenzyl 4-Pentenyl Ether.

Okada, M., Kitagawa, O., Fujita, M. & Taguchi, T., 1996 7 10, ： : Tetrahedron. 52, p. 8135-8142

研究成果: Article

25 引用 (Scopus)

Diastereoselective iodocarbocyclization reaction of 2- or 3-oxy-4-pentenylmalonate derivatives

Inoue, T., Kitagawa, O., Oda, Y. & Taguchi, T., 1996 11 15, ： : Journal of Organic Chemistry. 61, 23, p. 8256-8263 8 p.

研究成果: Article

Derivatives

Brefeldin A

Titanium

Catalysts

25 引用 (Scopus)

Diastereoselective Iodocarbocyclization Reaction of 2- or 3-Oxy-4-pentenylmalonate Derivatives.

Inoue, T., Kitagawa, O., Oda, Y. & Taguchi, T., 1996 10 1, ： : J. Org. Chem.. 61, p. 8256-8263

研究成果: Article

20 引用 (Scopus)

Iodocarbocyclization reaction

Kitagawa, O., Inoue, T. & Taguchi, T., 1996, ： : Reviews on Heteroatom Chemistry. 15, p. 243-262 20 p.

研究成果: Article

Enantioselectivity

Derivatives

Cyclopentanes

Nucleophiles

Titanium

Iodocarbocyclization Reaction.

Kitagawa, O., Inoue, T. & Taguchi, T., 1996 8 1, ： : Default journal. Reviews on Heteroato, p. 15-243

研究成果: Article

1997

71 引用 (Scopus)

An efficient synthesis of optically active axially chiral anilide and its application to iodine-mediated asymmetric Diels-Alder reaction

Kitagawa, O., Izawa, H., Taguchi, T. & Shiro, M., 1997 6 23, ： : Tetrahedron Letters. 38, 25, p. 4447-4450 4 p.

研究成果: Article

Anilides

Cyclopentanes

Iodine

Lactic Acid

isoprene

71 引用 (Scopus)

An Efficient Synthesis of Optically Active Axially Chiral Anilide and Its Application to Iodine-mediated Asymmetric Diels-Alder Reaction.

Kitagawa, O., Izawa, H., Taguchi, T. & Shiro, M., 1997 6 9, ： : Tetrahedron Lett.. 38, p. 4447-4450

研究成果: Article

9 引用 (Scopus)

Beckmann rearrangement of O-4-pentenyl oxime through N- bromosuccinimide-mediated activating process

Kitagawa, O., Fujita, M., Okada, M. & Taguchi, T., 1997 1, ： : Chemical and Pharmaceutical Bulletin. 45, 1, p. 32-35 4 p.

研究成果: Article

Bromosuccinimide

Oximes

Derivatives

北川 理

北川理