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1

Indole Alkaloids and Other Constituents of Rauwolfia serpentina

Itoh, Atsuko, Kumashiro, Tomoko, Yamaguchi, Machiko, Nagakura, Naotaka, Mizushina, Yoshiyuki, Nishi, Toyoyuki, Tanahashi, Takao

Journal:

Journal of Natural Products

Year:

2005

Language:

english

File:

PDF, 97 KB

english, 2005

2

Synthese und 1H- und 13C-NMR-spektroskopische Untersuchungen von monoterpenoiden Isochinolinen

Gerhard Höfle, Naotaka Nagakura, Meinhart H. Zenk

Journal:

European Journal of Inorganic Chemistry

Year:

1980

Language:

german

File:

PDF, 601 KB

german, 1980

3

ChemInform Abstract: Eight Minor Secoiridoid Glucosides with a Linear Monoterpene Unit from Jasminum polyanthum.

Yukiko Takenaka, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1999

File:

PDF, 29 KB

1999

4

ChemInform Abstract: Ipecac Alkaloids from Cephaelis acuminata

Atsuko Itoh, Yuki Ikuta, Yoshikazu Baba, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

2000

File:

PDF, 26 KB

2000

5

ChemInform Abstract: Structure Elucidation of Two Secoiridoid Glucosides from Jasminum officinale L. var. grandiflorum (L.) Kobuski.

Takao Tanahashi, Takeshi Sakai, Yukiko Takenaka, Naotaka Nagakura, Cheng-Chang Chen

Journal:

Year:

2000

File:

PDF, 27 KB

2000

6

ChemInform Abstract: A Tetrahydroisoquinoline-monoterpene Glucoside and an Iridoid Glucoside from Alangium kurzii.

Takao Tanahashi, Chizu Kobayashi, Atsuko Itoh, Naotaka Nagakura, Kenichiro Inoue, Hiroshi Kuwajima, Hua-Xin Wu

Journal:

Year:

2000

File:

PDF, 27 KB

2000

7

ChemInform Abstract: Quaternary Isoquinoline Alkaloids from Stephania cepharantha.

Takao Tanahashi, Yuko Su, Naotaka Nagakura, Hidekazu Nayeshiro

Journal:

Year:

2000

File:

PDF, 26 KB

2000

8

ChemInform Abstract: Five Secoiridoid Glucosides Esterified with a Cyclopentanoid Monoterpene Unit from Jasminum nudiflorum.

Takao Tanahashi, Yukiko Takenaka, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2000

File:

PDF, 28 KB

2000

9

ChemInform Abstract: Glycosides of Benzyl and Salicyl Alcohols from Alangium chinense.

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura, Kenichiro Inoue, Hiroshi Kuwajima, Hua-Xin Wu

Journal:

Year:

2002

File:

PDF, 26 KB

2002

10

ChemInform Abstract: Nine New Secoiridoid Glucosides from Jasminum nudiflorum

Yukiko Takenaka, Takao Tanahashi, Hiromi Taguchi, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2002

File:

PDF, 27 KB

2002

11

Phenyl Ethers from Cultured Lichen Mycobionts of Graphis scripta var. serpentina and G. rikuzensis.

Yukiko Takenaka, Takao Tanahashi, Naotaka Nagakura, Nobuo Hamada

Journal:

Year:

2003

File:

PDF, 61 KB

2003

12

Two Triterpenoid Saponins from Neonauclea sessilifolia.

Atsuko Itoh, Takao Tanahasi, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2004

File:

PDF, 85 KB

2004

13

ChemInform Abstract: Naphthopyrones from Cultured Lichen Mycobionts of Pyrenula sp.

Yukiko Takenaka, Naotaka Nagakura, Nobuo Hamada, Takao Tanahashi

Journal:

Year:

2010

File:

PDF, 19 KB

2010

14

6′-O-feruloyl- and 6′-O-sinapoyl-demethylalangisides, tetrahydroisoquinoline-monoterpene glucosides from Alangium platanifolium

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1992

Language:

english

File:

PDF, 469 KB

english, 1992

15

Five secoiridoid glucosides from Fraxinus formosana

Takao Tanahashi, Hiroko Watanabe, Atsuko Itoh, Naotaka Nagakura, Kenichiro Inoue, Masami Ono, Tetsuro Fujita, Masanori Morita, Cheng-chang Chen

Journal:

Year:

1992

Language:

english

File:

PDF, 387 KB

english, 1992

16

A secoiridoid glucoside from Fraxinus formosana

Takao Tanahashi, Hiroko Watanabe, Atsuko Itoh, Naotaka Nagakura, Kenichiro Inoue, Masami Ono, Tetsuro Fujita, Cheng-Chang Chen

Journal:

Year:

1992

Language:

english

File:

PDF, 266 KB

english, 1992

17

Two phenolic glucosides and an iridoid glucoside from Alangium platanifolium var. Trilobum

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1993

Language:

english

File:

PDF, 465 KB

english, 1993

18

A secoiridoid glucoside from Fraxinus insularis

Takao Tanahashi, Atsuko Shimada, Naotaka Nagakura, Kenichiro Inoue, Hiroshi Kuwajima, Kiyokazu Takaishi, Chen Cheng-Chang

Journal:

Year:

1993

Language:

english

File:

PDF, 508 KB

english, 1993

19

Acylated tetrahydroisoquinoline-monoterpene glucosides from Alangium lamarckii

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1996

Language:

english

File:

PDF, 457 KB

english, 1996

20

Two dimeric secoiridoid glucosides from Jasminum polyanthum

Takao Tanahashi, Yukiko Takenaka, Naotaka Nagakura

Journal:

Year:

1996

Language:

english

File:

PDF, 500 KB

english, 1996

21

Quantitative structure–activity relationship analyses of antioxidant and free radical scavenging activities for hydroxybenzalacetones

Chisako Yamagami, Noriko Motohashi, Tatsuhiko Emoto, Akira Hamasaki, Takao Tanahashi, Naotaka Nagakura, Yoshito Takeuchi

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

2004

Language:

english

File:

PDF, 281 KB

english, 2004

22

Phenolic and iridoid glycosides from Strychnos axillaris

Atsuko Itoh, Yasuhiro Tanaka, Naotaka Nagakura, Toru Akita, Toyoyuki Nishi, Takao Tanahashi

Journal:

Year:

2008

Language:

english

File:

PDF, 152 KB

english, 2008

23

Secoiridoid glucosides and unusual recyclized secoiridoid aglycones from Ligustrum vulgare

Takao Tanahashi, Yukiko Takenaka, Naoaki Okazaki, Megumi Koge, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2009

Language:

english

File:

PDF, 290 KB

english, 2009

24

Secoiridoid glucosides from Fraxinus americana

Yukiko Takenaka, Takao Tanahashi, Masashi Shintaku, Takeshi Sakai, Naotaka Nagakura, Parida

Journal:

Year:

2000

Language:

english

File:

PDF, 273 KB

english, 2000

25

Tetrahydroisoquinoline-monoterpene and iridoid glycosides from Alangium lamarckii

Atsuko Itoh, Takao Tanahashi, Masako Tabata, Miho Shikata, Michiko Kakite, Maho Nagai, Naotaka Nagakura

Journal:

Year:

2001

Language:

english

File:

PDF, 220 KB

english, 2001

26

Purification and characterization of the berberine bridge enzyme from berberis beaniana cell cultures

Paul Steffens, Naotaka Nagakura, Meinhart H. Zenk

Journal:

Year:

1985

Language:

english

File:

PDF, 701 KB

english, 1985

27

Radioimmunoassay determination of six opium alkaloids and its application to plant screening

Ute Wieczorek, Naotaka Nagakura, Christian Sund, Stefan Jendrzejewski, Meinhart H. Zenk

Journal:

Year:

1986

Language:

english

File:

PDF, 873 KB

english, 1986

28

Radioimmunoassay for the determination of loganin and the biotransformation of loganin to secologanin by plant cell cultures

Takao Tanahashi, Naotaka Nagakura, Hiroyuki Inouye, Meinhart H. Zenk

Journal:

Year:

1984

Language:

english

File:

PDF, 661 KB

english, 1984

29

Four tetrahydroisoquinoline-monoterpene glucosides from Cephaelis ipecacuanha

Naotaka Nagakura, Atsuko Itoh, Takao Tanahashi

Journal:

Year:

1993

Language:

english

File:

PDF, 712 KB

english, 1993

30

Four secoiridoid glucosides from Jasminum mesnyi

Kenichiro Inoue, Tetsuro Fujita, Hiroyuki Inouye, Hiroshi Kuwajima, Kiyokazu Takaishi, Takao Tanahashi, Naotaka Nagakura, Yukihiro Asaka, Tadao Kamikawa, Tetsuro Shingu

Journal:

Year:

1991

Language:

english

File:

PDF, 710 KB

english, 1991

31

Tetrahydroisoquinoline-monoterpene glucosides from Alangium lamarckii and Cephaelis ipecacuanha

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura, Hidekazu Nayeshiro

Journal:

Year:

1994

Language:

english

File:

PDF, 503 KB

english, 1994

32

Secoiridoid glucosides from Jasminum mesnyi

Takao Tanahashi, Naotaka Nagakura, Hiroshi Kuwajima, Kiyokazu Takaishi, Kenichiro Inoue, Hiroyuki Inouye

Journal:

Year:

1989

Language:

english

File:

PDF, 313 KB

english, 1989

33

Six tetrahydroisoquinoline-monoterpene glucosides from Cephaelis ipecacuanha

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1991

Language:

english

File:

PDF, 772 KB

english, 1991

34

Dibenzofurans from the cultured lichen mycobionts of Lecanora cinereocarnea

Takao Tanahashi, Yukiko Takenaka, Naotaka Nagakura, Nobuo Hamada

Journal:

Year:

2001

Language:

english

File:

PDF, 122 KB

english, 2001

35

Tetrahydroisoquinoline-monoterpene glycosides from Cephaelis acuminata

Atsuko Itoh, Yoshikazu Baba, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

2002

Language:

english

File:

PDF, 165 KB

english, 2002

36

Secoiridoid and iridoid glucosides from Syringa afghanica

Yukiko Takenaka, Naoaki Okazaki, Takao Tanahashi, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2002

Language:

english

File:

PDF, 202 KB

english, 2002

37

6H-Dibenzo[b,d]pyran-6-one derivatives from the cultured lichen mycobionts of Graphis spp. and their biosynthetic origin

Takao Tanahashi, Yukiko Takenaka, Naotaka Nagakura, Nobuo Hamada

Journal:

Year:

2003

Language:

english

File:

PDF, 144 KB

english, 2003

38

Two chromone-secoiridoid glycosides and three indole alkaloid glycosides from Neonauclea sessilifolia

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura, Toyoyuki Nishi

Journal:

Year:

2003

Language:

english

File:

PDF, 234 KB

english, 2003

39

Four secoiridoid glucosides from fraxinus insularis

Takao Tanahashi, Parida, Yukiko Takenaka, Naotaka Nagakura, Kenichiro Inoue, Hiroshi Kuwajima, Chen-Chang Chen

Journal:

Year:

1998

Language:

english

File:

PDF, 186 KB

english, 1998

40

Five trimeric secoiridoid glucosides from Jasminum polyanthum

Yukiko Takenaka, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1998

Language:

english

File:

PDF, 406 KB

english, 1998

41

Five tetrahydroisoquinoline-monoterpene glycosides with a disaccharide moiety from Alangium lamarckii

Atsuko Itoh, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1997

Language:

english

File:

PDF, 345 KB

english, 1997

42

Xanthones from the cultured lichen mycobionts of Pyrenula japonica and Pyrenula pseudobufonia

Takao Tanahashi, Yukiko Takenaka, Yuki Ikuta, Kaori Tani, Naotaka Nagakura, Nobuo Hamada

Journal:

Year:

1999

Language:

english

File:

PDF, 133 KB

english, 1999

43

Ipecac alkaloids from Cephaelis acuminata

Atsuko Itoh, Yuki Ikuta, Yoshikazu Baba, Takao Tanahashi, Naotaka Nagakura

Journal:

Year:

1999

Language:

english

File:

PDF, 183 KB

english, 1999

44

The structure of catalpalactone

Hiroyuki Inouye, Takuo Okuda, Yasubumi Hirata, Naotaka Nagakura, Masao Yoshizaki

Journal:

Tetrahedron Letters

Year:

1965

Language:

english

File:

PDF, 153 KB

english, 1965

45

Sambacosides a, e and f, novel tetrameric iridoid glucosides from jasminum sambac

Takao Tanahashi, Naotaka Nagakura, Kenichiro Inoue, Hiroyuki Inouye

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 265 KB

english, 1988

46

Die ungewöhnlichen reaktionen des diazomethans mit der phthalidcarbonsäure

Hiroyuki Inouye, Takuo Okuda, Naotaka Nagakura, Masayoshi Okigawa

Journal:

Tetrahedron Letters

Year:

1967

Language:

german

File:

PDF, 290 KB

german, 1967

47

Strictosidine, the common precursor for monoterpenoid indole alkaloids with 3 α and 3 β configuration

Martina Rueffer, Naotaka Nagakura, Meinhart H. Zenk

Journal:

Tetrahedron Letters

Year:

1978

Language:

english

File:

PDF, 223 KB

english, 1978

48

Structure of corydalidzine, a new alkaloid from corydalis koidzumiana

Chiaki Tani, Naotaka Nagakura, Shin Hattori

Journal:

Tetrahedron Letters

Year:

1973

Language:

english

File:

PDF, 171 KB

english, 1973

49

A quinic acid ester fromStrychnos lucida

Atsuko Itoh, Yasuhiro Tanaka, Naotaka Nagakura, Toyoyuki Nishi, Takao Tanahashi

Journal:

Journal of Natural Medicines

Year:

2006

Language:

english

File:

PDF, 232 KB

english, 2006

50

Three isocoumarins and a benzofuran from the cultured lichen mycobionts of Pyrenula sp.

Yukiko Takenaka, Takao Tanahashi, Naotaka Nagakura, Atsuko Itoh, Nobuo Hamada

Journal:

Year:

2004

Language:

english

File:

PDF, 275 KB

english, 2004

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