Heitaro Obara : rechercher sur Z-Library

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1

CARTHAMIN AND ISOCARTHAMIN

Obara, Heitaro, Onodera, Jun-ichi

Journal:

Chemistry Letters

Année:

1978

Langue:

english

Fichier:

PDF, 2.64 MB

english, 1978

2

STRUCTURE OF CARTHAMIN

Obara, Heitaro, Onodera, Jun-ichi

Journal:

Chemistry Letters

Année:

1979

Langue:

english

Fichier:

PDF, 5.67 MB

english, 1979

3

Synthesis of (+),(−)-Model Compounds and Absolute Configuration of Carthamin; A Red Pigment in the Flower Petals of Safflower

Sato, Shingo, Obara, Heitaro, Kumazawa, Toshihiro, Onodera, Jun-ichi, Furuhata, Kimio

Journal:

Chemistry Letters

Année:

1996

Fichier:

PDF, 337 KB

1996

4

ChemInform Abstract: Novel Glycosylation of the Nitroxyl Radicals with Peracetylated Glycosyl Fluorides Using a Combination of BF3×OEt2 and an Amine Base as Promoters.

Shingo Sato, Toshihiro Kumazawa, Shigeru Matsuba, Jun-ichi Onodera, Masaaki Aoyama, Heitaro Obara, Hitoshi Kamada

Journal:

Année:

2002

Fichier:

PDF, 38 KB

2002

5

ChemInform Abstract: Synthesis of Carthamin Acetate, the Red Pigment in Safflower Petals.

Shingo Sato, Toshihiro Kumazawa, Hiroyuki Watanabe, Koji Takayanagi, Shigeru Matsuba, Jun-ichi Onodera, Heitaro Obara, Kimio Furuhata

Journal:

Année:

2002

Fichier:

PDF, 28 KB

2002

6

Syntheses of 2,4,6-trihydroxy-, 2,4,6-trihydroxy-5-methyl- and 2,4,5,6-tetrahydroxy-substituted 3-(3-phenylpropionyl)benzaldehydes and their bactericidal activity

Shingo Sato, Heitaro Obara, Hiroto Takeuchi, Takashi Tawaraya, Akira Endo, Jun-Ichi Onodera

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 181 KB

english, 1995

7

Synthesis and enzyme-catalyzed hydrolysis of a radical-masked glycosylated spin-label reagent

Shingo Sato, Miho Nemoto, Toshihiro Kumazawa, Shigeru Matsuba, Jun-ichi Onodera, Masaaki Aoyama, Heitaro Obara, Hitoshi Kamada

Journal:

Carbohydrate Research

Année:

2004

Langue:

english

Fichier:

PDF, 330 KB

english, 2004

8

Synthesis and spectral properties of polymethine-cyanine dye–nitroxide radical hybrid compounds for use as fluorescence probes to monitor reducing species and radicals

Shingo Sato, Minoru Tsunoda, Minoru Suzuki, Masahiro Kutsuna, Kiyomi Takido-uchi, Mitsuru Shindo, Hitoshi Mizuguchi, Heitaro Obara, Hiroaki Ohya

Journal:

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Année:

2009

Langue:

english

Fichier:

PDF, 917 KB

english, 2009

9

Efficient synthesis of analogs of safflower yellow B, carthamin, and its precursor: two yellow and one red dimeric pigments in safflower petals

Shingo Sato, Takashi Kusakari, Tohru Suda, Takaharu Kasai, Toshihiro Kumazawa, Jun-ichi Onodera, Heitaro Obara

Journal:

Année:

2005

Langue:

english

Fichier:

PDF, 265 KB

english, 2005

10

Novel glycosylation of the nitroxyl radicals with peracetylated glycosyl fluorides using a combination of BF3·OEt2 and an amine base as promoters

Shingo Sato, Toshihiro Kumazawa, Shigeru Matsuba, Jun-ichi Onodera, Masaaki Aoyama, Heitaro Obara, Hitoshi Kamada

Journal:

Carbohydrate Research

Année:

2001

Langue:

english

Fichier:

PDF, 131 KB

english, 2001

11

In vivo EPR imaging by using an acyl-protected hydroxylamine to analyze intracerebral oxidative stress in rats after epileptic seizures

Hidekastu Yokoyama, Osamu Itoh, Masaaki Aoyama, Heitaro Obara, Hiroaki Ohya, Hitoshi Kamada

Journal:

Magnetic Resonance Imaging

Année:

2000

Langue:

english

Fichier:

PDF, 401 KB

english, 2000

12

In vivo temporal EPR imaging of the brain of rats by using two types of blood-brain barrier-permeable nitroxide radicals

Hidekastu Yokoyama, Osamu Itoh, Masaaki Aoyama, Heitaro Obara, Hiroaki Ohya, Hitoshi Kamada

Journal:

Magnetic Resonance Imaging

Année:

2002

Langue:

english

Fichier:

PDF, 507 KB

english, 2002

13

Temporal brain imaging by a rapid scan ESR-CT system in rats receiving intraperitoneal injection of a methyl ester nitroxide radical

Hidekatsu Yokoyama, Osamu Itoh, Tateaki Ogata, Heitaro Obara, Hiroaki Ohya-Nishiguchi, Hitoshi Kamada

Journal:

Magnetic Resonance Imaging

Année:

1997

Langue:

english

Fichier:

PDF, 508 KB

english, 1997

14

New sensitive agents for detecting singlet oxygen by electron spin resonance spectroscopy

Takashi Igarashi, Kazuhisa Sakurai, Tetsuo Oi, Heitaro Obara, Hiroaki Ohya, Hitoshi Kamada

Journal:

Free Radical Biology and Medicine

Année:

1999

Langue:

english

Fichier:

PDF, 119 KB

english, 1999

15

The Photochemical Fries Rearrangement of Phenyl Cinnamate

Obara, Heitaro, Takahashi, Hiroshi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1967

Langue:

english

Fichier:

PDF, 1.81 MB

english, 1967

16

The Synthesis of 2′,3′,4,4′,6′-Pentahydroxychalcone

Obara, Heitaro, Onodera, Jun-ichi, Kurihara, Yuji

Journal:

Bulletin of the Chemical Society of Japan

Année:

1971

Fichier:

PDF, 108 KB

1971

17

The Photo-Fries Rearrangement of Bis(methoxymethoxy)phenyl Cinnamates

Onodera, Jun-ichi, Obara, Heitaro

Journal:

Bulletin of the Chemical Society of Japan

Année:

1974

Fichier:

PDF, 356 KB

1974

18

Synthesis of (±)-Tetrahydroanhydroaucubigenone and (±)-Tetrahydroanhydroaucubigenin

Obara, Heitaro, Kimura, Hiroshi, Suzuki, Masanobu, Onodera, Jun-ichi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1978

Fichier:

PDF, 400 KB

1978

19

Synthesis of 2′,3′,4,4′,6′-Pentahydroxychalcone, an Aglycone of Carthamin, and Its Isomerization into 4′,5,6,7- and 4′,5,7,8-Tetrahydroxyflavanone, Carthamidin and Isocarthamidin

Obara, Heitaro, Onodera, Jun-ichi, Kurihara, Yuji, Yamamoto, Fumitada

Journal:

Bulletin of the Chemical Society of Japan

Année:

1978

Fichier:

PDF, 597 KB

1978

20

Synthesis of t -2, t -3-Dicarboxy- r -1-cyclopentylacetic Acid

Obara, Heitaro, Kimura, Hiroshi, Suzuki, Masanobu, Yamada, Shigenobu

Journal:

Bulletin of the Chemical Society of Japan

Année:

1979

Fichier:

PDF, 242 KB

1979

21

The Synthesis of 2,5-Bis( p -methoxycinnamoyl)-1,3,4,6,7,8- and 4,5-Bis( p -methoxycinnamoyl)-1,2,3,6,7,8-hexamethoxyxanthene

Obara, Heitaro, Onodera, Jun-ichi, Saito, Takashi, Sato, Shingo, Shibata, Tsutomu, Shibayama, Kimio

Journal:

Bulletin of the Chemical Society of Japan

Année:

1981

Fichier:

PDF, 357 KB

1981

22

Synthesis of Ceratiolin, a Constituent of Ceratiola ericoides

Obara, Heitaro, Onodera, Jun-ichi, Yusa, Katsuhiro, Tsuchiya, Mitsuhiro, Matsuba, Shigeru

Journal:

Bulletin of the Chemical Society of Japan

Année:

1989

Fichier:

PDF, 228 KB

1989

23

A Synthetic Route to (±)-Humulone

Obara, Heitaro, Onodera, Jun-ichi, Machida, Yoshihisa, Yada, Shuji

Journal:

Bulletin of the Chemical Society of Japan

Année:

1989

Fichier:

PDF, 256 KB

1989

24

THE SYNTHESIS OF 4′,5,6,7- AND 4′,5,7,8-TETRAHYDROXYFLAVANONE AND THEIR COMPARISON WITH CARTHAMIDIN AND ISOCARTHAMIDIN

Obara, Heitaro, Onodera, Jun-ichi, Yamamoto, Fumitada

Journal:

Chemistry Letters

Année:

1973

Langue:

english

Fichier:

PDF, 2.20 MB

english, 1973

25

SYNTHESIS OF DEHYDRO-3,3′-BIS( p -HYDROXYCINNAMOYL)-5,5′-METHYLENEDIFILICINIC ACID, AN ANALOG OF CARTHAMIN

Obara, Heitaro, Onodera, Jun-ichi, Shirasaki, Fumio

Journal:

Chemistry Letters

Année:

1980

Langue:

english

Fichier:

PDF, 3.77 MB

english, 1980

26

THE STRUCTURE OF SAFFLOMIN-A, A COMPONENT OF SAFFLOWER YELLOW

Onodera, Jun-ichi, Obara, Heitaro, Osone, Masahide, Maruyama, Yasunobu, Sato, Shingo

Journal:

Chemistry Letters

Année:

1981

Langue:

english

Fichier:

PDF, 4.87 MB

english, 1981

27

Syntheses of dl -Tetrahydroanhydrodesoxyaucubigenin and Related Compounds

Kurosawa, Kazu, Obara, Heitaro, Uda, Hisashi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1966

Langue:

english

Fichier:

PDF, 13.13 MB

english, 1966

28

The Intramolecular Hemiacetal Structure of Benzoyl-(2-hydroxybenzoyl)methyl Bromide

Obara, Heitaro, Onodera, Jun-ichi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1968

Langue:

english

Fichier:

PDF, 5.31 MB

english, 1968

29

A Synthesis of 2-(2′-Hydroxyethyl)cyclopentanone by the Barton Reaction

Obara, Heitaro, Kimura, Hiroshi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1969

Langue:

english

Fichier:

PDF, 2.74 MB

english, 1969

30

The Synthesis of 3′-Methoxy-2′,4,4′,6′- and 2′-Methoxy-3′,4,4′,6′-tetrahydroxychalcone and Some Quinochalcones and a Comparison of Them with Carthamin

Obara, Heitaro, Onodera, Jun-ichi, Abe, Satoshi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1979

Fichier:

PDF, 695 KB

1979

31

Synthesis of 3-( p -Hydroxycinnamoyl)-5-methylfilicinic Acid and Dehydro-3,3′-diacetyl-5,5′-methylenedifilicinic Acid

Obara, Heitaro, Onodera, Jun-ichi, Abe, Satoshi, Saito, Takashi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1980

Fichier:

PDF, 277 KB

1980

32

A Synthetic Route to (±)-Tetrahydroanhydroaucubigenone

Kimura, Hiroshi, Obara, Heitaro, Takahashi, Sei

Journal:

Bulletin of the Chemical Society of Japan

Année:

1982

Fichier:

PDF, 329 KB

1982

33

Synthesis of 5′-[1-(Methoxycarbonyl)-2-( p -methoxyphenyl)ethyl]-and 5′-[2-(methoxyphenyl)-1-( p -methoxyphenyl)ethyl]-2′,3′,4,4′,6′-pentamethoxychalcone

Obara, Heitaro, Onodera, Jun-ichi, Tsuchiya, Mitsuhiro, Matsueda, Hiroyuki, Sato, Shingo, Matsuba, Shigeru

Journal:

Bulletin of the Chemical Society of Japan

Année:

1991

Fichier:

PDF, 461 KB

1991

34

THE SYNTHESIS OF DL-TETRAHYDROANHYDROAUCUBIGENONE

Obara, Heitaro, Kimura, Hiroshi, Onodera, Jun-ichi, Suzuki, Masanobu

Journal:

Chemistry Letters

Année:

1975

Langue:

english

Fichier:

PDF, 3.99 MB

english, 1975

35

THE SYNTHESIS OF QUINOCHALCONES

Obara, Heitaro, Onodera, Jun-ichi

Journal:

Chemistry Letters

Année:

1974

Langue:

english

Fichier:

PDF, 4.27 MB

english, 1974

36

THE FORMATION OF 2-ACYLAMINO-4- t -BUTYL-6-NITROPHENOLS BY THE PHOTO-IRRADIATION OF 1-ALKOXY-4- t -BUTYL-2,6-DINITROBENZENES

Obara, Heitaro, Onodera, Jun-ichi, Hattori, Masahiko

Journal:

Chemistry Letters

Année:

1982

Langue:

english

Fichier:

PDF, 2.68 MB

english, 1982

37

SYNTHESIS OF 2,4-DIACETYL-6-C-β-D-GLUCOPYRANOSYLPHLOROGLUCINOL

Obara, Heitaro, Hattori, Masahiko, Matsui, Yuzo

Journal:

Chemistry Letters

Année:

1984

Langue:

english

Fichier:

PDF, 4.05 MB

english, 1984

38

SYNTHESIS OF 2,6-DIACETYL-4-C(β-D-GLUCOPYRANOSYL)-4-HYDROXYCYCLOHEXANE-1,3,5-TRIONE AND ITS ACID HYDROLYSIS

Obara, Heitaro, Matsui, Yuzo, Namai, Sozo, Machida, Yoshihisa

Journal:

Chemistry Letters

Année:

1984

Langue:

english

Fichier:

PDF, 3.77 MB

english, 1984

39

SYNTHESIS OF 2-( p -HYDROXYCINNAMOYL)-4-HYDROXY-4,6-DIMETHYLCYCLOHEXANE-1,3,5-TRIONE, AN ANALOG OF SAFFLOMIN A

Obara, Heitaro, Machida, Yoshihisa, Namai, Sozo, Onodera, Jun-ichi

Journal:

Chemistry Letters

Année:

1985

Langue:

english

Fichier:

PDF, 3.02 MB

english, 1985

40

SYNTHESIS OF 2-[[3-HYDROXY-5-[3-(4-HYDROXYPHENYL)-1-OXO-2-PROPENYL]-3-METHYL-2,4,6-TRIOXOCYCLOHEX-1-YL]METHYLENE]-4-HYDROXY-6-[3-(4-HYDROXYPHENYL)-1-OXO-2-PROPENYL]-4-METHYL-1,3,5-TRIOXOCYCLOHEXANE, AN ANALOG OF CARTHAMIN

Obara, Heitaro, Namai, Sozo, Machida, Yoshihisa

Journal:

Chemistry Letters

Année:

1986

Langue:

english

Fichier:

PDF, 3.53 MB

english, 1986

41

Further Study of Syntheses of dl -2,3-Dicarboxycyclopentylacetic Acids

Kurosawa, Kazu, Obara, Heitaro

Journal:

Bulletin of the Chemical Society of Japan

Année:

1966

Langue:

english

Fichier:

PDF, 10.69 MB

english, 1966

42

The Photo-Fries Rearrangement of Hydroxyphenyl Cinnamates

Obara, Heitaro, Takahashi, Hiroshi, Hirano, Hiromichi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1969

Langue:

english

Fichier:

PDF, 3.91 MB

english, 1969

43

The Intramolecular Hemiacetal Structure of Benzoyl(2-hydroxybenzoyl)carbinol and Its Monobenzoate

Obara, Heitaro, Onodera, Jun-ichi

Journal:

Bulletin of the Chemical Society of Japan

Année:

1969

Langue:

english

Fichier:

PDF, 5.21 MB

english, 1969

44

Synthesis of 1,2,3,6,7,8-, 1,3,4,5,6,8-, and 1,2,3,5,6,8-Hexamethoxyxanthene

Obara, Heitaro, Onodera, Jun-ichi, Shibata, Tsutomu, Shibayama, Kimio

Journal:

Bulletin of the Chemical Society of Japan

Année:

1981

Fichier:

PDF, 331 KB

1981

45

METHYLATED DERIVATIVES FROM THE HYDROLYSIS PRODUCTS OF SAFFLOMIN-A

Onodera, Jun-ichi, Sato, Shingo, Obara, Heitaro

Journal:

Chemistry Letters

Année:

1981

Langue:

english

Fichier:

PDF, 6.63 MB

english, 1981

46

SYNTHESIS OF HEXAACETYLTETRAHYDROAUCUBIN A

Obara, Heitaro, Kimura, Hiroshi, Tanaka, Yasuhiko

Journal:

Chemistry Letters

Année:

1985

Langue:

english

Fichier:

PDF, 3.38 MB

english, 1985

47

THE SYNTHESES AND PROPERTIES OF TWO ANALOGS OF CARTHAMIN

Obara, Heitaro, Onodera, Jun-ichi, Abe, Satoshi

Journal:

Chemistry Letters

Année:

1974

Langue:

english

Fichier:

PDF, 3.63 MB

english, 1974

48

HYDROLYSIS OF CARTHAMIN

Onodera, Jun-ichi, Saito, Takashi, Obara, Heitaro

Journal:

Chemistry Letters

Année:

1979

Langue:

english

Fichier:

PDF, 5.56 MB

english, 1979

49

Precursor of Carthamin, A Constituent of Safflower

Kumazawa, Toshihiro, Sato, Shingo, Kanenari, Daisuke, Kunimatsu, Akira, Hirose, Ryoji, Matsuba, Shigeru, Obara, Heitaro, Suzuki, Masanobu, Sato, Masaya, Onodera, Jun-ichi

Journal:

Chemistry Letters

Année:

1994

Fichier:

PDF, 251 KB

1994

50

Synthesis of a New Nitrone for Detection of Radical Species

Sato, Rikiya, Nakahashi, Kenichi, Iwadate, Hiroshi, Takeishi, Makoto, Igarashi, Takashi, Obara, Heitaro, Kamada, Hitoshi

Journal:

Chemistry Letters

Année:

1998

Fichier:

PDF, 143 KB

1998