Zobrazeno 1 - 10
of 225
pro vyhledávání: '"Tadashi Masamune"'
Publikováno v:
Chemistry Letters. 19:1283-1286
Lettucenin A, a novel composite phytoalexin with 2H-cyclohepta[b]furan-2-one ring system was synthesized from an indanone. The unique ring system was constructed by reductive ring expansion of a dibromomethylcyclohexadienone.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8c97266e822472e2a2caefeba01404a
https://doi.org/10.1246/cl.1990.1283
https://doi.org/10.1246/cl.1990.1283
Publikováno v:
Phytochemistry. 29:2337-2339
The structure of a new sesquiterpene alcohol, isolated from the red alga Laurencia nipponica , was determined as (4 S ,5 R ,10 R )-selin-6(7)-en-11-ol by spectroscopic methods and chemical correlations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58c2d870ec9c3198cbaad5e88f7d9fc0
https://doi.org/10.1016/0031-9422(90)83067-b
https://doi.org/10.1016/0031-9422(90)83067-b
Publikováno v:
Chemistry Letters. 24:171-172
Potato tuber tissues, when infected with Phytophthora infestans or treated with arachidonic acid, generated H2O2 which then elicited accumulation of the phytoalexins. The plant tissues, when treate...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::537d2275c394a351bf08cc5cd4b6f11e
https://doi.org/10.1246/cl.1995.171
https://doi.org/10.1246/cl.1995.171
Publikováno v:
Bulletin of the Chemical Society of Japan. 57:2276-2281
The synthetic procedure leading to preparation of representative compounds, (±)-solavetivone and (±)-hinesol, of two classes of spirovetivanes, is described. The procedure involves Diels-Alder reaction of 4-substituted 5,6-dihydro-3,5-dimethylaniso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f182648be08a61fc8e661cd40cd424b8
https://doi.org/10.1246/bcsj.57.2276
https://doi.org/10.1246/bcsj.57.2276
Publikováno v:
Journal of Synthetic Organic Chemistry, Japan. 46:416-425
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35866bab8060064513298a8df3388658
https://doi.org/10.5059/yukigoseikyokaishi.46.416
https://doi.org/10.5059/yukigoseikyokaishi.46.416
Publikováno v:
Bulletin of the Chemical Society of Japan. 53:1049-1056
The synthesis of (±)-glutinosone, an antifungal norsesquiterpene from Nicotiana glutinosa infected with tobacco mosaic virus, is described. It has been completed by two processes, one being based on the Robinson annelation method and another on a mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c04821f7e74c5e792e233f1acb9af915
https://doi.org/10.1246/bcsj.53.1049
https://doi.org/10.1246/bcsj.53.1049
Autor:
Mitsuo Takasugi, Akio Furusaki, Victor Hugo Castro-Araya, Tadashi Masamune, Takeshi Matsumoto
Publikováno v:
Chemistry Letters. 3:1477-1480
A new alkaloid, designated as veratrenone, was isolated from Veratrum album L. var. glandiflorum Maxima. and assigned formula I on the basis of the spectral data and X-ray crystallography. The alkaloid is the first compound, whose structure represent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::742666b7f8a3feeabdebb7023d9fd2ba
https://doi.org/10.1246/cl.1974.1477
https://doi.org/10.1246/cl.1974.1477
Autor:
Nobukatsu Katsui, Tadashi Masamune, Mitsuo Takasugi, Akira Shirata, Kenji Monde, Shinji Kawashima
Publikováno v:
Phytochemistry. 26:371-375
An induced and six preformed antifungal compounds were isolated from Chinese yam ( Dioscorea batatas ) inoculated with the bacterium Pseudomonas cichorii . The induced compound, a phytoalexin, was identified as dihydropinosylvin. The preformed compou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bd3a217075471ab52228eb616322287
https://doi.org/10.1016/s0031-9422(00)81417-x
https://doi.org/10.1016/s0031-9422(00)81417-x
Publikováno v:
Chemistry Letters. 5:975-978
Treatment of 11α-hydroxy-, 11α-acetoxy-, and 11-oxo-17α-acetyl-12α,13α-epoxyetiojervanes (1, 1a, and 11) with boron trifluoride etherate gave mixtures of several compounds, respectively, including interesting rearranged products, e.g., compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0207141ee0435adb216daec803e7633c
https://doi.org/10.1246/cl.1976.975
https://doi.org/10.1246/cl.1976.975
Publikováno v:
Tetrahedron Letters. 30:3665-3668
The structure of a new bromo ether, isolated from the title alga and designated as laureoxolane, was determined by its physical properties and synthetic correlation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0006696354956ddc1b51d403b3fa30f4
https://doi.org/10.1016/s0040-4039(01)80477-9
https://doi.org/10.1016/s0040-4039(01)80477-9