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1

Studies on the Constituents of Ehretia thyrsiflora Nakai

Journal:

YAKUGAKU ZASSHI

Year:

1953

File:

PDF, 413 KB

1953

2

Reactions of benzylcarbonyl compounds with formanide I. a novel synthesis if isoquinolines.

Takaji Koyama, Takashi Hirota, Itsuya Itô, Mutsuko Toda, Masatoshi Yamato

Journal:

Tetrahedron Letters

Year:

1968

Language:

english

File:

PDF, 187 KB

english, 1968

3

Polycyclic N-Hetero Compounds. II, Synthesis of 11, 13, 15-Triazasteroidal Skeleton

KOYAMA, TAKAJI, HIROTA, TAKASHI, YOSHIDA, TADAAKI, HARA, HIDEKI, OHMORI, SHINJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1974

File:

PDF, 561 KB

1974

4

Chemical Structure and Sweet Taste of Isocoumarins and Related Compounds

YAMATO, MASATOSHI, SATO, KOICHI, HASHIGAKI, KUNIKO, OKI, MIYOKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1974

File:

PDF, 325 KB

1974

5

Polycyclic N-hetero compounds. VIII. Reactions of ketones with trisformylaminomethane.

KOYAMA, TAKAJI, HIROTA, TAKASHI, BASHOU, CHIZUKO, SATOH, YOSHIKO, WATANABE, YASUKO, MATSUMOTO, SACHIKO, SHINOHARA, YURIE, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 536 KB

1975

6

Polycyclic N-hetero compounds. III. Synthesis of 1,3,10-triazaphenanthrenes.

KOYAMA, TAKAJI, HIROTA, TAKASHI, SHINOHARA, YURIE, FUKUOKA, SUMIO, YAMATO, MASATOSHI, OHMORI, SHINJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 430 KB

1975

7

Polycyclic N-hetero compounds. X. Reactions of 1,3-cyclohexanedione and its dimer with formamide or trisformylaminomethane.

KOYAMA, TAKAJI, FUKUOKA, SUMIO, HIROTA, TAKASHI, MAEYAMA, JUN, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1976

File:

PDF, 639 KB

1976

8

Polycyclic N-Hetero Compounds. V. A Novel Synthesis of Isoquinoline by the Vilsmeier Reaction of Phenylacetonitriles

KOYAMA, TAKAJI, HIROTA, TAKASHI, SHINOHARA, YURIE, YAMATO, MASATOSHI, OHMORI, SHINJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 539 KB

1975

9

Polycyclic N-hetero compounds. XIV. Reactions of methylpyridines with formamide.

KOYAMA, TAKAJI, HIROTA, TAKASHI, BASHOU, CHIZUKO, NANBA, TETSUTO, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 600 KB

1977

10

Polycyclic N-hetero compounds. IV. Reactions of 4-amino-5-arylpyrimidines with dimethyl sulfoxide.

KOYAMA, TAKAJI, HIROTA, TAKASHI, IKEDA, MIKIKO, SATOH, TOSHIKO, IWADOH, AKIMASA, OHMORI, SHINJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 472 KB

1975

11

Polycyclic N-hetero compounds. IX. Reactions of tetralones with formamide or trisformylaminomethane.

KOYAMA, TAKAJI, HIROTA, TAKASHI, YAGI, FUMIKO, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 434 KB

1975

12

Polycyclic N-hetero compounds. XI. The modified Vilsmeier reaction of 4-alkylpyrimidines.

KOYAMA, TAKAJI, HIROTA, TAKASHI, BASHO, CHIZUKO, WATANABE, YASUKO, KITAUCHI, YOHKO, SATOH, YOSHIKO, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1976

File:

PDF, 504 KB

1976

13

Chemical structure and sweet taste of isocoumarin and related compounds. VI.

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, UENISHI, JUNICHI, YAMAKAWA, IKUKO, SATO, NORIKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 592 KB

1975

14

Polycyclic N-Hetero compounds. XII. Reactions of dihydroxynaphthalenes with formamide or trisformylaminomethane.

KOYAMA, TAKAJI, MOZAI, TOSHIMITSU, HIROTA, TAKASHI, ISHINO, YOSHIKAZU, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1976

File:

PDF, 553 KB

1976

15

Chemical structure and sweet taste of isocoumarin and related compounds. IX.

YAMATO, MASATOSHI, SATO, KOICHI, HASHIGAKI, KUNIKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 852 KB

1977

16

Chemical structure and sweet taste of isocoumarins and related compounds synthesis of 5-hydroxyflavanones and related dihydrochalcones.

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, MITO, KUMIKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 426 KB

1977

17

Chemical structure and sweet taste of isocoumarin and related compounds. VII.

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, HONDA, ETSUKO, SATO, KOICHI, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 662 KB

1977

18

Polycyclic N-hetero compounds. XV. The vilsmeier reaction of phenylacetonitriles. II.

HIROTA, TAKASHI, KOYAMA, TAKAJI, NANBA, TETSUTO, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 713 KB

1977

19

Polycyclic N-hetero compounds. XIII Reactions of pyridine N-oxides with formamide.

KOYAMA, TAKAJI, NANBA, TETSUTO, HIROTA, TAKASHI, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 564 KB

1977

20

Chemical structure and sweet taste of isocoumarin and related compounds. VIII.

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, TSUKIOKA, AKIKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 822 KB

1977

21

Chemical structure and sweet taste of isocoumarins and related compounds. X. Syntheses of sweet 5-hydroxyflavanones and related dihydrochalcones.

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, MITO, KUMIKO, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1978

File:

PDF, 702 KB

1978

22

Reactivity of isocoumarins. I. Effect of a neighboring hydroxyl group on the reduction of the lactone carbonyl group.

YAMATO, MASATOSHI, ISHIKAWA, TADATAKA, NAGAMATSU, TOMOHISA, YOSHIKAWA, SHIN, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1980

File:

PDF, 857 KB

1980

23

Polycyclic N-hetero compounds. XVII. Reactions of heterocyclic active methyl group with formamide or trisformylaminomethane.

HIROTA, TAKASHI, KOYAMA, TAKAJI, BASHO, CHIZUKO, NANBA, TETSUTO, SASAKI, KENJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1977

File:

PDF, 648 KB

1977

24

Polycyclic N-hetero compounds. VII. Reactions of benzyl ketones with formamide XI.

KOYAMA, TAKAJI, HIROTA, TAKASHI, SHINOHARA, YURIE, MATSUMOTO, SACHIKO, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 603 KB

1975

25

Polycyclic N-hetero compounds. VI. Synthesis of 11,13,15-triazasteroidal compounds and correction of the structures of its intermediates.

KOYAMA, TAKAJI, HARA, HIDEKI, HIROTA, TAKASHI, OHMORI, SHINJI, YAMATO, MASATOSHI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1975

File:

PDF, 582 KB

1975

26

Photochemical reaction of isocoumarin and related compounds.

YAMATO, MASATOSHI, SATO, KOICHI, TANIGUCHI, ATSUSHI, MIYAKI, AKEMI, KOYAMA, TAKAJI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1978

File:

PDF, 1.03 MB

1978

27

Polycyclic N-hetero compounds. XVI. Reactions of benzyl ketones with formamide or acetamide.

HIROTA, TAKASHI, KOYAMA, TAKAJI, NANBA, TETSUTO, YAMATO, MASATOSHI, MATSUMURA, TAKAFUMI

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1978

File:

PDF, 839 KB

1978

28

10.1254/fpj.77.245

GOMITA, Yutaka, ICHIMARU, Yasuyuki, MORIYAMA, Minehiro, FUKAMACHI, Kimiko, UCHIKADO, Akihisa, ARAKI, Yasunori, FUKUDA, Tamotsu, KOYAMA, Takaji

Journal:

Folia Pharmacologica Japonica

Year:

1981

File:

PDF, 6.23 MB

1981

29

Reimer-Tiemann Reaction of p-Alkylphenols. II

Koyama, Takaji, Asou, Takashi

Journal:

YAKUGAKU ZASSHI

Year:

1951

File:

PDF, 504 KB

1951

30

Studies on the Constituents of Coix Species. III.

Koyama, Takaji, Yamato, Masatoshi, Kubota, Kazuhiko

Journal:

YAKUGAKU ZASSHI

Year:

1956

File:

PDF, 663 KB

1956

31

Studies on the Constituents of Coix Species. V

Koyama, Takaji, Yamato, Masatoshi, Kubota, Kazuhiko

Journal:

YAKUGAKU ZASSHI

Year:

1957

File:

PDF, 518 KB

1957

32

Reactions of Benzylcarbonyl Compounds with Formamide. IV

KOYAMA, TAKAJI, TODA, MUTSUKO, HIROTA, TAKASHI, HASHIMOTO, MAKI, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1969

File:

PDF, 532 KB

1969

33

Reactions of Benzylcarbonyl Compounds with Formamide. VIII. On α-Acyl-m-methyl Substituted Phenylacetonitriles

KOYAMA, TAKAJI, HIROTA, TAKASHI, MATSUMURA, TAKAFUMI, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1972

File:

PDF, 663 KB

1972

34

Syntheses of biologically Active Isocoumarins. I. : Chemical Structure and Sweet Taste of 3, 4-Dihydroisocoumarins

YAMATO, MASATOSHI, KITAMURA, TAKEO, HASHIGAKI, KUNIKO, KUWANO, YASUYO, YOSHIDA, NORIKO, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1972

File:

PDF, 585 KB

1972

35

Reactions of Benzylcarbonyl Compounds with Formamide. II : A Novel Synthesis of Isoquinolines

KOYAMA, TAKAJI, HIROTA, TAKASHI, ITO, ITSUYA, TODA, MUTSUKO, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1969

File:

PDF, 544 KB

1969

36

Reactions of Benzylcarbonyl Compounds with Formamide. VI. : Formation of Isoquinolines

KOYAMA, TAKAJI, TODA, MUTSUKO, HIROTA, TAKASHI, KATSUSE, YOSHIKI, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1970

File:

PDF, 457 KB

1970

37

Analysis of Pharmaceutical Preparations using Infrared Diffuse Reflection. I. Identification of Components

TANAKA, YOSHIMASA, TANAKA, YUKIKO, ONO, SUMIE, NAKANO, MISAO, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1975

File:

PDF, 609 KB

1975

38

Reactions of Benzylcarbonyl Compounds with Formamide. IX. On α-Acyl-5, 6, 7, 8-tetrahydro-2-naphthylacetonitriles

KOYAMA, TAKAJI, HIROTA, TAKASHI, YAMATO, MASATOSHI, KOHKI, SHINYA

Journal:

YAKUGAKU ZASSHI

Year:

1973

File:

PDF, 459 KB

1973

39

Syntheses of biologically Active Isocoumarins. II. Chemical Structure and Sweet Taste of 3, 4-Dihydroisocoumarins

YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, KUWANO, YASUYO, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1972

File:

PDF, 596 KB

1972

40

Reactions of Benzylcarbonyl Compounds with Formamide. X. On α-Acyl-α-naphthylacetonitriles

KOYAMA, TAKAJI, HIROTA, TAKASHI, YAMATO, MASATOSHI, KOHKI, SHINYA

Journal:

YAKUGAKU ZASSHI

Year:

1973

File:

PDF, 431 KB

1973

41

Studies on the Constituents of Coix Species. IV

Koyama, Takaji, Yamato, Masatoshi, Kubota, Kazuhiko

Journal:

YAKUGAKU ZASSHI

Year:

1956

File:

PDF, 278 KB

1956

42

Synthesis of 1, 3, 10-Triazaphenanthrene. I

KOYAMA, TAKAJI, HIROTA, TAKASHI, YAMATO, MASATOSHI, OHTA, NAOZUMI

Journal:

YAKUGAKU ZASSHI

Year:

1973

File:

PDF, 441 KB

1973

43

Steric Constitution of Diphenylethane Analogues

SATO, KOICHI, YAMATO, MASATOSHI, HASHIGAKI, KUNIKO, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1977

File:

PDF, 1.10 MB

1977

44

Chemical Structure and Sweet Taste of Isocoumarins and Its Derivatives. IV

YAMATO, MASATOSHI, SATO, KOICHI, HASHIGAKI, KUNIKO, ISHIKAWA, TADATAKA, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1973

File:

PDF, 591 KB

1973

45

Studies on the Constituents of Coix Species. II

Journal:

YAKUGAKU ZASSHI

Year:

1955

File:

PDF, 451 KB

1955

46

Syntheses of biologically Active Isocoumarins. III. Chemical Structure and Sweet Taste of 3, 4-Dihydroisocoumarins

YAMATO, MASATOSHI, KITAMURA, TAKEO, HASHIGAKI, KUNIKO, KUWANO, YASUYO, MURAKAMI, SHOKO, KOYAMA, TAKAJI

Journal:

YAKUGAKU ZASSHI

Year:

1972

File:

PDF, 651 KB

1972

47

Reactions of Benzylcarbonyl Compounds with Formamide. V. : On α-Acyl-3, 4-dimethoxyphenylacetonitriles

KOYAMA, TAKAJI, TODA, MUTSUKO, HIROTA, TAKASHI, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1970

File:

PDF, 389 KB

1970

48

Reactions of Benzylcarbonyl Compounds with Formamide. VII. : Reactions of Desoxybenzoins

KOYAMA, TAKAJI, KATSUSE, YOSHIKI, TODA, MUTSUKO, HIROTA, TAKASHI, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1970

File:

PDF, 587 KB

1970

49

Reactions of Benzylcarbonyl Compounds with Formamide. III

KOYAMA, TAKAJI, HIROTA, TAKASHI, TODA, MUTSUKO, IWAI, KATSUMASA, MINAMI, MOTOSHIGE, YAMATO, MASATOSHI

Journal:

YAKUGAKU ZASSHI

Year:

1969

File:

PDF, 490 KB

1969

50

Tiemann-Reimer Reaction of p-Alkylphenols. I

Koyama, Takaji, Sadanaga, Takashi

Journal:

YAKUGAKU ZASSHI

Year:

1949

File:

PDF, 311 KB

1949