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1

Pyranonaphthoquinone antibiotics. 4. Total synthesis of (+)-griseusin A, an enantiomer of the naturally occurring griseusin A

Kometani, Tadashi, Takeuchi, Yoshio, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1983

Language:

english

File:

PDF, 522 KB

english, 1983

2

Preparation and Some Reactions of 2-Trimethylsilyloxyfurans

Yoshii, Eiichi, Koizumi, Toru, Kitatsuji, Eitaro, Kawazoe, Toshiji, Kaneko, Tomie

Journal:

Year:

1976

Language:

english

File:

PDF, 94 KB

english, 1976

3

Pyranonaphthoquinone antibiotics. Part 1. Syntheses of 9-demethoxyeleutherins and 9-deoxynanaomycin A methyl ester

Kometani, Tadashi, Yoshii, Eiichi

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1981

Language:

english

File:

PDF, 835 KB

english, 1981

4

Cytotoxic effects of acrylates and methacrylates: Relationships of monomer structures and cytotoxicity

Journal:

Journal of Biomedical Materials Research Part B: Applied Biomaterials

Year:

1997

Language:

english

File:

PDF, 145 KB

english, 1997

5

ChemInform Abstract: Synthesis of 4-Hydroxy-2-cyclopentenone Derivatives by [3 + 2] Annulation of β-Heteroatom-Substituted Acryloylsilanes and Lithium Enolate of Methyl Ketones.

Kei Takeda, Yasuhiro Ohtani, Emi Ando, Ken-ichi Fujimoto, Eiichi Yoshii, Toru Koizumi

Journal:

Year:

1999

File:

PDF, 34 KB

1999

6

Selective flow-injection determination of methanol in the presence of ethanol based on a multi-enzyme system with chemiluminescence detection

Yoshiie Sekine, Masayasu Suzuki, Toshifumi Takeuchi, Eiichi Tamiya, Isao Karube

Journal:

Analytica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 482 KB

english, 1993

7

Stereochemistry of the base-catalyzed methanolysis of 2-phenyl-tetrahydropyrrolo-1,3,2-oxazaphospholes

Toru Koizumi, Reiko Yanada (nee Ishizaka), Hiroyasu Takagi, Hajime Hirai, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 234 KB

english, 1981

8

Diels-Alder reaction of α-substituted acrylates and α-(methylene)lactones: Conformation of dienophiles and endo/exo selectivity

Kei Takeda, Ikuhiro Imaoka, Eiichi Yoshii

Journal:

Year:

1994

Language:

english

File:

PDF, 791 KB

english, 1994

9

The first total synthesis of tetronasin (M139603)

Kozo Hori, Hideki Kazuno, Keiichi Nomura, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 265 KB

english, 1993

10

Synthesis of (±)-ircinianin, a marine sponge sesterterpene

Kei Takeda, Masa-aki Sato, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 191 KB

english, 1986

11

Synthesis and absolute configuration of methyl α-tetronitroside (kijanoside)

Keishi Funaki, Kei Takeda, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 212 KB

english, 1982

12

Synthesis of 28,29-bisnor-(±)-kijanolide

Kei Takeda, Shin-go Yano, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 244 KB

english, 1988

13

A new synthetic method of 3-acyltetronic acid derivatives and its application to the synthesis of isoaspertetronin a (isogregatin A)

Kei Takeda, Hiroko Kubo, Toru Koizumi, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 249 KB

english, 1982

14

Total synthesis of tetronolide, the aglycon of tetrocarcins

Kei Takeda, Eiji Kawanishi, Hitoshi Nakamura, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 230 KB

english, 1991

15

Methyl α-acyloxy-γ-methylene-β-tetronate. Preparation and use as a building block for the synthesis of the spirotetronic acid structure of chlorothricolide

Kaoru Okumura, Kousuke Okazaki, Kei Takeda, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 272 KB

english, 1989

16

Synthesis of 4, 8-dihydroxy-3-methyl-5,6-benzo-2-oxabicyclo[2.2.2]oct-5-ene

Mineichi Sudani, Yoshio Takeuchi, Eiichi Yoshii, Tadashi Kometani

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 279 KB

english, 1981

17

Isolation of pentacoordinate species during reactions of five-membered cyclic phosphates an —evidence for pentacoordinate intermediates—

Toru Koizumi, Yutaka Watanabe, Yuichi Yoshida, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1974

Language:

english

File:

PDF, 233 KB

english, 1974

18

The hydrolysis of heteroatom containing benzophospholes

Toru Koizumi, Yutaka Watanabe, Yuichi Yoshida, Kei Takeda, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1977

Language:

english

File:

PDF, 191 KB

english, 1977

19

Stereochemistry of BF3 catalyzed methanolysis of phosphetane amides

Toru Koizumi, Yoshiko Kobayashi, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 178 KB

english, 1976

20

A novel phosphorylation method using the ring strain of five-membered cyclic phosphorodiamidate

Toru Koizumi, Yoshiyuki Arai, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1973

Language:

english

File:

PDF, 194 KB

english, 1973

21

Grignard reaction 0f 2-phenyl-tetrahydropyrrolo-1,5,2-oxazaphospholes, observation of the stereospecific inversion of configuration

Toru Koizumi, Reiko Yanada(nee Ishizaka), Hiroyasu Takagi, Hajime Hirai, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 130 KB

english, 1981

22

Highly diastereoselective Diels-Alder reaction of optically active ethyl 2-p-tolylsulfinylmethylenepropionate with cyclopentadiene

Toru Koizumi, Ichiro Hakamada, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 254 KB

english, 1984

23

A new method of preparing optically active alkyl phenyl phosphonates

Toru Koizumi, Hiroko Amitani, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1978

File:

PDF, 103 KB

1978

24

The structure of agarotetrol, a novel highly oxygenated chromone from agarwood(jinko)

Eiichi Yoshii, Toru Koizumi, Takiko Oribe, Fumio Takeuchi, Kiichi Kubo

Journal:

Tetrahedron Letters

Year:

1978

Language:

english

File:

PDF, 295 KB

english, 1978

25

Low-temperature oxyanion-accelerated vinylcyclopropane-cyclopentene rearrangement. Reaction of 2-(2-(trimethylsilyl)-ethenyl)cyclopropyl acetates with methyl lithium

Kei Takeda, Keiki Sakurama, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1997

Language:

english

File:

PDF, 199 KB

english, 1997

26

Asymmetric Reductive Cyclization Using the Intramolecular Conjugate Addition of Enolates onto α,β-Unsaturated Sulfoxides

Hiroki Yoshizaki, Tadashi Tanaka, Eiichi Yoshii, Toru Koizumi, Kei Takeda

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 574 KB

english, 1998

27

X ray crystallography of (+)-(R)p methyl phenyl phosphoramidate of ethyl L-phenylalaninate

Toru Koizumi, Yoshiko Kobayashi, Eiichi Yoshii, Masayuki Takamoto, Kazuhide Kamiya, Hiroyuki Asakawa

Journal:

Tetrahedron Letters

Year:

1980

Language:

english

File:

PDF, 120 KB

english, 1980

28

Stepwise and selective dealkylation of phosphotriesters with phenylthiotrimethylsilane

Yoshio Takeuchi, Yukio Demachi, Eiichi Yoshii

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 139 KB

english, 1979

29

Comparing α-carbanion-stabilizing ability of substituents using the Brook rearrangement

Kei Takeda, Haruka Ubayama, Ayako Sano, Eiichi Yoshii, Toru Koizumi

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 203 KB

english, 1998

30

Cyclopropenone-containing cysteine proteinase inhibitors. Synthesis and enzyme inhibitory activities

Ryoichi Ando, Toshiro Sakaki, Yasuhiro Morinaka, Chizuko Takahashi, Yoshikuni Tamao, Narihiko Yoshii, Sota Katayama, Ken-ichi Saito, Hidetoshi Tokuyama, Masahiko Isaka, Eiichi Nakamura

Journal:

Bioorganic & Medicinal Chemistry

Year:

1999

Language:

english

File:

PDF, 205 KB

english, 1999

31

A cohort study of hepatitis C virus (HCV) infection in an HCV epidemic area of Japan: age and sex-related seroprevalence of anti-HCV antibody, frequency of viremia, biochemical abnormality and histological changes

Makoto Kuboki, Haruhide Shinzawa, Li Shao, Masamichi Ishibashi, Eiichi Yoshii, Katunori Suzuki, Koji Saito, Takafumi Saito, Hitoshi Togashi, Tsuneo Takahashi, Seiji Yasumura, Akira Fukao

Journal:

Liver International

Year:

1999

Language:

english

File:

PDF, 937 KB

english, 1999

32

Secondary structure of the hepatitis C virus 5‘ untranslated region and efficacy of interferon therapy for chronic hepatitis C

Katsunori Suzuki, Haruhide Shinzawa, Makoto Kuboki, Masamichi Ishibashi, Eiichi Yoshii, Takafumi Saito, Tsuneo Takahashi

Journal:

Liver International

Year:

1998

Language:

english

File:

PDF, 627 KB

english, 1998

33

Synthesis of the upper spirotetronic acid fragment of kijanolide

Takeda, Kei, Yano, Shingo, Sato, Masaaki, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1987

Language:

english

File:

PDF, 402 KB

english, 1987

34

Synthesis of the upper fragment of tetronolide

Takeda, Kei, Kato, Hideki, Sasahara, Hiroya, Yoshii, Eiichi

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1986

Language:

english

File:

PDF, 187 KB

english, 1986

35

Synthesis of the chiral upper fragment of tetronolide

Matsuda, Koji, Nomura, Keiichi, Yoshii, Eiichi

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1989

Language:

english

File:

PDF, 225 KB

english, 1989

36

An intramolecular Diels-Alder approach to the synthesis of chlorothricolide. Synthesis of (.+-.)-24-O-methylchlorothricolide

Takeda, Kei, Igarashi, Yasuo, Okazaki, Kousuke, Yoshii, Eiichi, Yamaguchi, Kentaro

Journal:

Journal of Organic Chemistry

Year:

1990

Language:

english

File:

PDF, 443 KB

english, 1990

37

Influence of intraocular lens optical design on high-order aberrations

Futoshi Taketani, Eiichi Yukawa, Toshiaki Yoshii, Yuuko Sugie, Yoshiaki Hara

Journal:

Journal of Cataract & Refractive Surgery

Year:

2005

Language:

english

File:

PDF, 88 KB

english, 2005

38

A subcloned human esophageal squamous cell carcinoma cell line with low thrombomodulin expression showed increased invasiveness compared with a high thrombomodulin-expressing clone – thrombomodulin as a possible candidate for an adhesion molecule of squamous cell carcinoma

Yoshifumi Matsushita, Kiyotaka Yoshiie, Yoshiro Imamura, Hiroki Ogawa, Hiroshi Imamura, Sonshinn Takao, Suguru Yonezawa, Takashi Aikou, Ikuro Maruyama, Eiichi Sato

Journal:

Year:

1998

Language:

english

File:

PDF, 276 KB

english, 1998

39

Relation of Obesity to Serum Lipids and Lipoproteins in Schoolchildren

Keisuke Hamada, Tomoko Tanaka, Osamu Yoshii, Sachiyo Saito, Kazuhiro Yamamoto, Eiichi Sennari, Yoshizumi Yamauchi, Takahiro Okishima, Yuzi Matsuoka, Yuichi Sato, Hiroko Suzumiya, Tomoe Maemura, Harumi

Journal:

Pediatrics International

Year:

1980

Language:

english

File:

PDF, 102 KB

english, 1980

40

Serum Lipids and Lipoproteins in Schoolchildren in Miyazaki City, Japan

Keisuke Hamada, Tomoko Tanaka, Kazuhiro Yamamoto, Eiichi Sennari, Masahide Tahara, Yoshizumi Yamauchi, Manabu Takei, Osamu Yoshii, Harumichi Madokoro, Tomoe Maemura, Hiroko Suzumiya, Sachiyo Saito, Ta

Journal:

Pediatrics International

Year:

1981

Language:

english

File:

PDF, 110 KB

english, 1981

41

Pyranonaphthoquinone antibiotics. Part 2. Syntheses of (�)-nanaomycin A and (�)-eleutherins

Kometani, Tadashi, Takeuchi, Yoshio, Yoshii, Eiichi

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1981

Language:

english

File:

PDF, 720 KB

english, 1981

42

Pyranonaphthoquinone antibiotics. 3. Synthesis of (+)-9-deoxygriseusin B and absolute configuration revision of griseusins A and B

Kometani, Tadashi, Takeuchi, Yoshio, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1982

Language:

english

File:

PDF, 767 KB

english, 1982

43

Synchronous bilateral tonsillar carcinomas associated with human papillomavirus

Nakahara, Susumu, Yasui, Toshimichi, Takenaka, Yukinori, Yamamoto, Yoshifumi, Yoshii, Tadashi, Morii, Eiichi, Inohara, Hidenori

Journal:

Auris Nasus Larynx

Year:

2014

Language:

english

File:

PDF, 974 KB

english, 2014

44

Studies on the synthesis of cardiotonic steroids. 4. Synthesis of strophanthidin

Yoshii, Eiichi, Oribe, Takiko, Tumura, Kumiko, Koizumi, Toru

Journal:

Journal of Organic Chemistry

Year:

1978

Language:

english

File:

PDF, 754 KB

english, 1978

45

Reaction of .beta.-heteroatom-substituted .alpha.,.beta.-unsaturated acylsilanes with ketone enolates: a new [3+2] annulation based on the Brook rearrangement

Takeda, Kei, Fujisawa, Masato, Makino, Tomoko, Yoshii, Eiichi, Yamaguchi, Kentaro

Journal:

Journal of the American Chemical Society

Year:

1993

Language:

english

File:

PDF, 262 KB

english, 1993

46

[3 + 4] Annulation of α,β-Unsaturated Acylsilanes with Enolates of α,β-Unsaturated Methyl Ketones: Scope and Mechanism

Takeda, Kei, Nakajima, Akemi, Takeda, Mika, Okamoto, Yasushi, Sato, Taku, Yoshii, Eiichi, Koizumi, Toru, Shiro, Motoo

Journal:

Journal of the American Chemical Society

Year:

1998

Language:

english

File:

PDF, 666 KB

english, 1998

47

A synthetic approach to the macrolide nucleus of tetronolide

Takeda, Kei, Urahata, Makoto, Yoshii, Eiichi, Takayanagi, Hiroaki, Ogura, Haruo

Journal:

Journal of Organic Chemistry

Year:

1986

Language:

english

File:

PDF, 318 KB

english, 1986

48

High asymmetric induction in the 1,3-dipolar cycloaddition of (R)-(+)-p-tolyl vinyl sulfoxide with acyclic nitrones

Koizumi, Toru, Hirai, Hajime, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1982

Language:

english

File:

PDF, 280 KB

english, 1982

49

Synthesis of .gamma.-unsubstituted .alpha.-acyl-.beta.-tetronic acids from aldehydes

Nomura, Keiichi, Iida, Tetsuya, Hori, Kozo, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1994

Language:

english

File:

PDF, 335 KB

english, 1994

50

Studies on the synthesis of tetronolide. Synthesis of a spiro-.alpha.-acyltetronic acid model

Takeda, Kei, Shibata, Yumiko, Sagawa, Yukihiro, Urahata, Makoto, Funaki, Keishi, Hori, Kozo, Sasahara, Hiroya, Yoshii, Eiichi

Journal:

Journal of Organic Chemistry

Year:

1985

Language:

english

File:

PDF, 3.05 MB

english, 1985

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