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51

Early CT signs in out-of-hospital cardiac arrest survivors: Temporal profile and prognostic significance

Joji Inamasu, Satoru Miyatake, Masaru Suzuki, Masashi Nakatsukasa, Hideto Tomioka, Masanori Honda, Kenichi Kase, Kenji Kobayashi

Journal:

Year:

2010

Language:

english

File:

PDF, 335 KB

english, 2010

52

Cardiac arrest due to food asphyxiation in adults: Resuscitation profiles and outcomes

Joji Inamasu, Satoru Miyatake, Hideto Tomioka, Toshiyuki Shirai, Masaya Ishiyama, Junpei Komagamine, Naoki Maeda, Takeshi Ito, Kenichi Kase, Kenji Kobayashi

Journal:

Year:

2010

Language:

english

File:

PDF, 152 KB

english, 2010

53

Room-temperature pulsed operation of a GaInN multiple-quantum-well laser diode with optimized well number

Nakamura, Fumihiko, Kobayashi, Toshimasa, Asatsuma, Tsunenori, Funato, Kenji, Yanashima, Katsunori, Hashimoto, Shigeki, Naganuma, Kaori, Tomioka, Satoshi, Miyajima, Takao, Morita, Etsuo, Kawai, Hiroji

Journal:

Journal of Crystal Growth

Year:

1998

Language:

english

File:

PDF, 126 KB

english, 1998

54

Enantioselective 1,2-addition of grignard reagents to aldehydes using chiral diamines

Makoto Nakajima, Kiyoshi Tomioka, Kenji Koga

Journal:

Year:

1993

Language:

english

File:

PDF, 502 KB

english, 1993

55

Highly enantioselective dihydroxylation of olefins by osmium tetroxide with chiral diamines

Makoto Nakajima, Kiyoshi Tomioka, Koga Kenji

Journal:

Year:

1993

Language:

english

File:

PDF, 866 KB

english, 1993

56

Stereoselective reactions. XXI. Asymmetric alkylation of α-alkyl β-keto esters to α,α-dialkyl β-keto esters having either (R)- or (S)-chiral quaternary center depending on the solvent system

Kaori Ando, Yataka Takemasa, Kiyoshi Tomioka, Kenji Koga

Journal:

Year:

1993

Language:

english

File:

PDF, 861 KB

english, 1993

57

Design, synthesis, and antitumor activity-absolute configuration relationships of podophyllotoxin aza-analogues

Kiyoshi Tomioka, Yoshihiro Kubota, Kenji Koga

Journal:

Year:

1993

Language:

english

File:

PDF, 758 KB

english, 1993

58

Total synthesis of natural (+)-spatol. Confirmation of the absolute stereostructure

Masahide Tanaka, Kiyoshi Tomioka, Kenji Koga

Journal:

Year:

1994

Language:

english

File:

PDF, 965 KB

english, 1994

59

Asymmetric total synthesis of natural (-)-and unnatural (+)-steganacin : Determination of the absolute configuration of natural antitumor steganacin

Kiyoshi Tomioka, Tsuneo Ishiguro, Yōichi Iitaka, Kenji Koga

Journal:

Year:

1984

Language:

english

File:

PDF, 3.16 MB

english, 1984

60

Stereoselective reactions: XIII. Total synthesis of (+)-sesbanine by a highly stereoselective cycloannelation reaction

Kiyoshi Tomioka, Kenji Koga

Journal:

Year:

1988

Language:

english

File:

PDF, 352 KB

english, 1988

61

Stereoselective reactions. XXIV. Chlorotrimethylsilane promoted asymmetric Michael reaction of chiral lithioenamines derived from α-alkyl β-keto esters

Kaori Ando, Wonjun Seo, Kiyoshi Tomioka, Kenji Koga

Journal:

Year:

1994

Language:

english

File:

PDF, 613 KB

english, 1994

62

Asymmetric 1,2-addition of organolithiums to aldimines catalyzed by chiral ligand

Isao Inoue, Mitsuru Shindo, Kenji Koga, Kiyoshi Tomioka

Journal:

Year:

1994

Language:

english

File:

PDF, 705 KB

english, 1994

63

Diastereoselective and enantioselective synthesis of 1,2-disubstituted cycloalkanecarboxaldehydes

Hiroshi Kogen, Kiyoshi Tomioka, Shun-Ichi Hashimoto, Kenji Koga

Journal:

Year:

1981

Language:

english

File:

PDF, 536 KB

english, 1981

64

A one-flask synthesis of dihydronaphthalenemethanols by directed addition of organolithium reagents to BHA naphthalenecarboxylates

Mitsuru Shindo, Kenji Koga, Yasutomi Asano, Kiyoshi Tomioka

Journal:

Year:

1999

Language:

english

File:

PDF, 948 KB

english, 1999

65

Enantioselective deprotonation of 4-substituted cyclohexanones by chiral chelated lithium amides having a fluorine-containing alkyl group on amide nitrogen

Kazumasa Aoki, Hiroshi Noguchi, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 243 KB

english, 1993

66

Enantioselective conjugate addition of organocuprate using a chiral amidophosphine ligand

Motomu Kanai, Kenji Koga, Kiyoshi Tomioka

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 295 KB

english, 1992

67

Enantiospecific total synthesis of (-)-megaphone by a highly controlled consecutive 1,4- and 1,3-asymmetric induction

Kiyoshi Tomioka, Hisashi Kawasaki, Yōichi Iitaka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 250 KB

english, 1985

68

Asymmetric synthesis of 2-substituted cycloalkanecarboxaldehydes

Shun-ichi Hashimoto, Hiroshi Kogen, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 214 KB

english, 1979

69

Reductive decyanization of α-amino nitriles with sodium in liquid ammonia. Usefulness in asymmetric syntheses of optically active alkaloids

Shun-ichi Yamada, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 152 KB

english, 1976

70

A biogenetic-type asymmetric synthesis of natural (+)-maritidine from L-tyrosine

Shun-ichi Yamada, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 202 KB

english, 1976

71

An expeditious synthesis of dolastatin 10

Kiyoshi Tomioka, Motomu Kanai, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 290 KB

english, 1991

72

Mechanistic aspects of asymmetric cis-dihydroxylation of olefins with osmium tetroxide employing a C2-symmetric chiral diamine

Kiyoshi Tomioka, Makoto Nakajima, Yōichi Iitaka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 302 KB

english, 1988

73

Asymmetric conjugate addition reaction by the use of (S)-γ-trityloxymethyl-γ-butyrolactam as a chiral auxiliary

Kiyoshi Tomioka, Toshiro Suenaga, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 246 KB

english, 1986

74

Asymmetric Michael reaction of α-alkyl β-keto esters via chiral enamines

Kiyoshi Tomioka, Kaori Ando, Kōsuke Yasuda, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 122 KB

english, 1986

75

A rationale of diastereofacial selection in the alkylation of endocyclic enolates with chirality at the β-position

Kiyoshi Tomioka, Kōsuke Yasuda, Hisashi Kawasaki, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 254 KB

english, 1986

76

Enantioface differentiating Michael reaction of ethyl acetoacetate with alkylidenemalonates via chiral enamine

Kiyoshi Tomioka, Kōsuke Yasuda, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 253 KB

english, 1986

77

An asymmetric synthesis of cis, anti, cis-tricyclo[5,3,0,02,6]decanes applying γ-hydroxymethyl-γ-butyrolactone as a chiral synthon. First asymmetric total synthesis of (−)-β-bourbonene

Kiyoshi Tomioka, Masahide Tanaka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 227 KB

english, 1982

78

Dramatic enantioselectivity change in dihydroxylation of olefins with chiral amine-osmium tetroxide complex

Kiyoshi Tomioka, Makoto Nakajima, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 167 KB

english, 1990

79

Conjugate addition reaction of organolithiums to naphthalenecarboxylates

Kiyoshi Tomioka, Mitsuru Shindo, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 142 KB

english, 1990

80

An efficient chiral synthesis of (+)-sesbanine

Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1980

Language:

english

File:

PDF, 209 KB

english, 1980

81

Asymmetric synthesis of 1,2-disubstituted cycloalkanecarboxaldehydes. procedures for the highly stereoselective preparation of cis- and trans-isomer

Hiroshi Kogen, Kiyoshi Tomioka, Shun-ichi Hashimoto, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1980

Language:

english

File:

PDF, 221 KB

english, 1980

82

The first total synthesis of (+)-spatol with natural configuration

Masahide Tanaka, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 213 KB

english, 1985

83

Stereochemical aspects of asymmetric diels-alder reaction catalyzed by chiral alkoxyaluminum dichlorides

Hiroyuki Takemura, Nobuyasu Komeshima, Ichiro Takahashi, Shun-ichi Hashimoto, Nobuo Ikota, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 224 KB

english, 1987

84

Chlorotrimethylsilane promoted asymmetric Michael reaction of chiral enamines of α-alkyl β-keto esters

Kiyoshi Tomioka, Wonjun Seo, Kaori Ando, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 247 KB

english, 1987

85

Asymmetric organolithium additions to imines

Kiyoshi Tomioka, Isao Inoue, Mitsuru Shindo, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1990

File:

PDF, 191 KB

1990

86

Control elements in the asymmetric tandem alkylation of α-alkylidene-γ-butyrolactone derivatives

Kiyoshi Tomioka, Hisashi Kawasaki, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 237 KB

english, 1985

87

Highly diastereoselective tandem alkylation of acyclic α,β-unsaturated esters based on the novel use of dithioacetal unit

Hisashi Kawasaki, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 216 KB

english, 1985

88

Asymmetric total synthesis of stoechospermol using intramolecular (2+2) photocycloaddition reaction

Masahide Tanaka, Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 234 KB

english, 1985

89

Synthesis and antitumor activity of podophyllotoxin aza-analogues

Kiyoshi Tomioka, Yoshihiro Kubota, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 157 KB

english, 1989

90

Design, synthesis, and antitumor activity of steganacin aza-analogues

Kiyoshi Tomioka, Yoshihiro Kubota, Hisashi Kawasaki, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 258 KB

english, 1989

91

Asymmetric total synthesis of antileukemic sesquiterpene (+)-ivalin

Kiyoshi Tomioka, Fumio Masumi, Toyoharu Yamashita, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 238 KB

english, 1984

92

Synthesis of the core enediyne structure of esperamicin-calichemicin class of antitumor antibiotics

Kiyoshi Tomioka, Hitoshi Fujita, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 285 KB

english, 1989

93

Studies directed towards the asymmetric total synthesis of antileukemic lignan lactones —synthesis of (−)-podorhizon—

Kiyoshi Tomioka, Hidemichi Mizuguchi, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1978

Language:

english

File:

PDF, 205 KB

english, 1978

94

Novel isomerization of dibenzocyclooctadiene lignan lactone —first synthesis of (±)-stegane—

Kiyoshi Tomioka, Hidemichi Mizuguchi, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 128 KB

english, 1979

95

Conjugate addition reaction of trimethylsilylacetonitrile with α,β-unsaturated carbonyl compounds. Synthetic studies toward sesbanimide

Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 122 KB

english, 1984

96

Factors controlling the diastereoface selectivity in the complementary asymmetric alkylation of α-alkyl β-keto esters

Kiyoshi Tomioka, Kaori Ando, Yutaka Takemasa, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 260 KB

english, 1984

97

Studies directed towards the asymmetric total synthesis of antileukemic lignan lactones. Synthesis of optically pure key intermediate and its utility

Kiyoshi Tomioka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 238 KB

english, 1979

98

Structural requirements of a chiral ligand for the catalytic asymmetric addition of thiophenol to α,β-unsaturated esters

Kiyoshi Tomioka, Manabu Okuda, Katsumi Nishimura, Shino Manabe, Motomu Kanai, Yasuo Nagaoka, Kenji Koga

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 210 KB

english, 1998

99

Steric tuning in chiral ligand mediated enantioselective alkylation of imines

Isao Inoue, Mitsuru Shindo, Kenji Koga, Kiyoshi Tomioka

Journal:

Tetrahedron: Asymmetry

Year:

1993

Language:

english

File:

PDF, 318 KB

english, 1993

100

Targeting DNA topoisomerase II with podophyllotoxin aza-analogue

Akira Iida, Masahiro Kano, Yoshihiro Kubota, Kenji Koga, Kiyoshi Tomioka

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1997

Language:

english

File:

PDF, 125 KB

english, 1997

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