Search Results:　 1-9 of 9

  • 1

    Antibacterial Novel Phenolic Diterpenes from Podocarpus macrophyllus D. DON

    SATO Kimihiko , SUGAWARA Keito , TAKEUCHI Hirono , PARK Hyun-Sun , AKIYAMA Toshiyuki , KOYAMA Tetsuo , AOYAGI Yutaka , TAKEYA Koichi , TSUGANE Takanori , SHIMURA Susumu

    … Two new sempervirol type diterpenes, inumakiols A, B, and six new totarol type diterpenes, inumakiols C-H, were isolated from a methanolic extract of bark of Podocarpus macrophyllus (Podocarpaceae), along with one known abietane, two known totarol type diterpenes, and one known totarol type diterpene dimer. …

    Chemical & pharmaceutical bulletin 56(12), 1691-1697, 2008-12-01

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  • 2

    New Labdane Diterpenes from the Stem Bark of Larix laricina

    PICHETTE Andre , LAVOIE Serge , MORIN Pierre , MSHVILDADZE Vakhtang , LEBRUN Maxime , LEGAULT Jean

    … Two new labdane diterpenes, cis-19-hydroxyabienol (1) and 8α-hydroxy-12Z,14-labdadien-19-al (2), along with another labdane described for the first time in the genus Larix, 19-acetoxy-13S-hydroxy-8(17),14-labdadiene (3) and a stilbene, 3-methoxy-3,3',5'-trihydroxystilbene (4), were isolated from the stem bark of Larch (Larix laricina). …

    Chemical & pharmaceutical bulletin 54(10), 1429-1432, 2006-10-01

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  • 3

    A New Abietane and Two Dimeric Abietane Diterpenes from the Black Heartwood of Cryptomeria japonica

    ARIHARA Shigenobu , UMEYAMA Akemi , BANDO Shinya , IMOTO Shinji , ONO Mikako , TANI Mayo , YOSHIKAWA Kazuko

    … Three new diterpenes, sugikurojins A-C (1-3) were isolated from the black heartwood of Cryptomeria japonica. … Also obtained in this investigation were the known compounds formosaninol (4), 15 sesquiterpenes (5-19), 16 diterpenes (20-35), three phenylpropanoids (36-38), and a phenolic compound (39). …

    Chemical & pharmaceutical bulletin 52(3), 354-358, 2004-03-01

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  • 4

    Biologically Functional Constituents of Spices and Herbs  [in Japanese]

    NAKATANI Nobuji

    … Examples of new antioxidants included phenolic diterpenes from rosemary and sage, which were remarkably effective, compounds such as phenolic carboxylic acids and glycosides from oregano and marjoram, gingerol-related compounds and diarylheptanoids from common ginger, biphenyls and flavonoids from thyme, and phenolic amides from pepper and chili pepper. …

    Nippon Eiyo Shokuryo Gakkaishi 56(6), 389-395, 2003-12-10

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  • 5

    Inhibitors of nitric oxide (NO) production in murine macrophage-like J774.1 cells from Brazilian propolis

    THAN Myint Myint , BANSKOTA Arjun H. , TEZUKA Yasuhiro , MIDORIKAWA Kiyoshi , MATSUSHIGE Katsumichi , KADOTA Shigetoshi

    ブラジル産プロポリスの水およびメタノールエキスがLPSで活性化したマウスマクロファージ様J774.1細胞の一酸化窒素(NO)産生を濃度依存的に抑制することを明らかにした。さらに,水エキスの成分検索を行ない17種のフェノール性化合物を単離したが,その中の15化合物はプロポリス水エキスからは初めて単離された化合物であった。また,methylρ-hydroxydihydrocinnamate(9)と1- …

    Journal of traditional medicines 20(1), 22-29, 2003-02-20

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  • 6

    Development and Applications of New Reactions for Construction of Basic Structures of Natural Products  [in Japanese]

    IWATA Chuzo

    … The alternative spirodienone formation reactions by the metal-catalyzed degradation reaction of phenolic α-diazoketones were applied to many natural spirocyclic compounds, such as chamigrane type sesquiterpenes, spirovetivane type phytoalexins, marine natural products, and so on. … Lewis acid mediated spirocyclization reaction of cyclohexene bis-acetal derivative was developed, and this reaction was applied to the synthesis of aphidicolane and stemodane diterpenes. …

    Journal of the Pharmaceutical Society of Japan 119(5), 357-376, 1999-05-01

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  • 7

    61 Synthetic Studies on Aphidicolane and Stemodane Diterpenes  [in Japanese]

    Iwata C. , Morie T. , Maezaki N. , Yamashita H. , Kuroda T. , Inoue T. , Kamei K. , Imanishi T. , Tanaka T. , Kim S. , Murakami K.

    … The tetracyclic enones (46 and 50), the basic skeletons of aphidicolane and stemodane diterpenes (I and II), were synthesized through an unprecedented ring construction sequence, B/C or B/D→B/C/D→A/B/C/D, and a formal total synthesis of (±)-aphidicolin (I) was accomplished. …

    天然有機化合物討論会講演要旨集 (32), 455-462, 1990-09-25

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  • 8

    Synthetic Studies on Aphidicolane and Stemodane Diterpenes. I. Synthesis of (2'R^*, 4a'S^*, 8a'R^*)-2', 8a'-Dimethyl-4a', 5', 8', 8a'-tetrahydrospiro [2,5-cyclohexadiene-1,1'(2H)-naphthalene]-3'(4'H), 4,6' (7'H)-trione

    IWATA CHUZO , MORIE TOSHIYA , TANAKA TETSUAKI

    … The title compound (8), a possible intermediate for the synthesis of aphidicolane and stemodane diterpenes, was synthesized by the decomposition of the phenolic α-diazoketone (9) in the presence of copper (II) chloride. …

    Chemical & pharmaceutical bulletin 33(3), 944-949, 1985-03-25

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  • 9

    :an approach to syntheses of biologically active natural products  [in Japanese]

    OHSAWA Tomihiko , OHTSUKA Yasuo , NAKATA Tadashi , AKITA Hiroyuki , SHIMAGAKI Masayuki

    … This group's recent works are reviewd for his memory by his staffs.<BR>Various types of the acid rearrangements in phenacylidene derivatives of (1) were disclosed and applied to the syntheses of the A-ring substituted diterpenes and a possible intermediate to grayanotoxins. … Ozonolysis of the phenolic C-ring was proved to be a convenient method for the cleavage of the ring and used for the short-step synthesis of drimane-type sesquiterpenes. …

    Journal of Synthetic Organic Chemistry, Japan 34(12), 920-933, 1976

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