Zobrazeno 1 - 10
of 26
pro vyhledávání: '"William G. Padolina"'
Publikováno v:
Biochemical Systematics and Ecology. 31:665-668
Publikováno v:
Annals of the New York Academy of Sciences. 864:463-467
Autor:
Hideaki Otsuka, William G. Padolina, Satoshi Yamamura, Lourdes R. Simpol, Koichiro Ozawa, Kazuo Yamasaki, Ryoji Kasai, Kazuhiro Ohtani
Publikováno v:
Phytochemistry. 39:105-110
The ethyl acetate-soluble portion of the MeOH extract of Ehretia microphylla showed inhibitory activity on exocytosis in antigen-stimulated rat basophils. The bioassay-guided separation of this fraction afforded five biologically active compounds. By
Autor:
William G. Padolina, Harumi Yamaji, Hiroe Kikuzaki, Katsuhide Okada, Chieko Kitora, Nobuji Nakatani, Kazumi Yoshio
Publikováno v:
Phytochemistry. 37:1383-1388
Three new labdane diterpenes were isolated together with four known diterpenes [(E)-labda-8(17),12-diene-15,16-dial, coronarin B and D, and isocoronarin D] from rhizomes of Hedychium coronarium. The structures of the new compounds were determined by
Publikováno v:
Phytochemistry. 35:253-257
The leaves of Alstonia macrophylla collected in Los Banos, The Philippines, were investigated and five new alkaloids were obtained along with four known alkaloids. The structures were determined by means of mass and NMR spectroscopy.
Autor:
John C. Coll, Bruce F. Bowden, Dianne M. Tapiolas, Consolacion Y. Ragasa, Shangxiao Li, William G. Padolina
Publikováno v:
Journal of Natural Products. 56:386-393
Two known, but previously uncharacterized, ent-kaurenic acid derivatives, 1 and 2, and four new sesquiterpenes of the eudesmanolide type, 3-6, have been isolated from Wedelia prostata. The structures were eludidated by a range of 1D and 2D high field
Autor:
Hideaki Otsuka, Naoko Kubo, Tomoki Hayashi, Kazuo Yamasaki, William G. Padolina, Naozumi Kashima
Publikováno v:
Phytochemistry. 31:3129-3133
The acyclic monoterpenediol diesters, premnaodorosides A, B and C, isolated from Premna odorata , were shown to be 3,7-dimethyloctan-1,8-diol esterified with iridoid acid glucosides, namely two mussaenosidic acid moieties, one mussaenosidic moiety an
Publikováno v:
Phytochemistry. 29:3321-3325
Lagunamine (19-hydroxytubotaiwine), angustilobine B acid and losbanine (6,7- seco -6- nor -angustilobine B) were obtained from the leaves of Philippine Alstonia scholaris , together with tubotaiwine, its oxide, and 6,7- seco - angustilobine B; the st
Autor:
Thawatchai Santisuk, Tatsuo Yamauchi, Rong-Fu Chen, William G. Padolina, Fumiko Abe, Gen-ichiro Nonaka
Publikováno v:
Phytochemistry. 29:3547-3552
From the leaves of Alstonia scholaris , collected in Taiwan, Thailand, Indonesia and Philippines, several new alkaloids, 19-epischolaricine, N b -methylscholaricine, N a -methylburnamine and vallesamine N b -oxide were isolated and their structures d
Autor:
Kazuo Yamasaki, William G. Padolina, Hideaki Otsuka, Consolacion Y. Ragasa, Tomohiro Satoh, Tatsuo Yamauchi
Publikováno v:
Scopus-Elsevier
Pseudoelephantopus spicatus afforded stigmasterol, glaucolide B and two novel germacranolides. Their structures were elucidated by NMR, mass spectrometry and X-ray crystallography.