Hiroaki Abe

Publications (2)4.72 Total impact

• Article: Bisabolane-type sesquiterpenes from the aerial parts of Lippia dulcis.

  Masateru Ono, Tsuyoshi Tsuru, Hiroaki Abe, Masashi Eto, Masafumi Okawa, Fumiko Abe, Junei Kinjo, Tsuyoshi Ikeda, Toshihiro Nohara
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  ABSTRACT: Six new bisabolane-type sesquiterpenes, peroxylippidulcines A-C (3-5), peroxyepilippidulcine B (6), and epilippidulcines B (7) and C (8), have been isolated from the aerial parts of Lippia dulcis, along with two known bisabolane-type sesquiterpenes, seven known flavonoids, and a known triterpenoid. The structures of 3-8 were characterized on the basis of NMR, MS, specific rotation, and X-ray crystallographic analysis data and chemical evidence.
  Journal of Natural Products 11/2006; 69(10):1417-20. · 3.13 Impact Factor
• Article: New iridoid glucosides from the aerial parts of Verbena brasiliensis.

  Masateru Ono, Kanna Oishi, Hiroaki Abe, Chikako Masuoka, Masafumi Okawa, Tsuyoshi Ikeda, Toshihiro Nohara
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  ABSTRACT: Two new iridoid glucosides, verbenabraside A (1) and verbenabraside B (2), were isolated from the aerial parts of Verbena brasiliensis VELL., along with six known iridoid glucosides, gelsemiol 3-O-beta-D-glucoside (3), verbraside (4), 9-hydroxysemperoside (5), griselinoside (6), aralidioside (7), and 6alpha-hydroxyforsythide dimethyl ester (8), three known phenylethanoid glycosides, 2-phenylethyl O-beta-D-xylopyranosyl-(1-->2)-beta-D-glucopyranoside (9), acteoside (10), and leucosceptoside A (11), two known lignan glucosides, dihydroxymethyl-bis(3,5-dimethoxy-4-hydroxyphenyl) tetrahydrofuran-9 (or 9')-O-beta-glucopyranoside (12) and (+)-lyoniresinol 3alpha-O-beta-D-glucopyranoside (13), a known methyl salicylate glucoside, methyl 2-O-beta-D-glucopyranosylbenzoate (14), and two known sterols, beta-sitosterol 3-O-beta-D-glucopyranoside (15) and beta-sitosterol (16). Their chemical structures were determined on the basis of spectroscopic data. Compound 1 exhibited stronger scavenging effect on the stable free radical 1,1-diphenyl-2-picrylhydrazyl than that of alpha-tocopherol.
  CHEMICAL & PHARMACEUTICAL BULLETIN 10/2006; 54(10):1421-4. · 1.59 Impact Factor