| In vitro: |
| J Nat Prod. 2015 Jul 24;78(7):1683-8. | | Antiviral Matrine-Type Alkaloids from the Rhizomes of Sophora tonkinensis.[Pubmed: 26132528] |
CONCLUSIONS:
Three new matrine-type alkaloids, (+)-5α-hydroxyoxysophocarpine (1), (-)-12β-hydroxyoxysophocarpine (2), and (+)-5α-hydroxylemannine (3), along with 14 known analogues, (-)-sophocarpine (4), (-)-5α-hydroxysophocarpine (5), (-)-9α-hydroxysophocarpine (6), (+)-12α-hydroxysophocarpine (7), (-)-12β-hydroxysophocarpine (8), (+)-oxysophocarpine (9), (+)-matrine (10), (+)-Sophoranol (11), (+)-9α-hydroxymatrine (12), (-)-14β-hydroxymatrine (13), (+)-oxymatrine (14), (+)-5α-hydroxyoxymatrine (15), (-)-14β-hydroxyoxymatrine (16), and (+)-sophoramine (17), were isolated from the rhizomes of Sophora tonkinensis. Their structures were elucidated via spectrometric data analyses, and the absolute configurations were established by single-crystal X-ray diffraction and ECD data.
CONCLUSIONS:
Alkaloids 2, 6, 11, and 13 exhibited antiviral activity against the Coxsackie virus B3 (CVB3), with IC50 values of 26.62-252.18 μM, and alkaloids 7, 8, and 17 inhibited influenza virus A/Hanfang/359/95 (H3N2) replication with IC50 values of 63.07-242.46 μM. | | Planta Med. 2006 Jul;72(9):854-6. Epub 2006 Jun 19. | | Quinolizidine alkaloids with anti-HBV activity from Sophora tonkinensis.[Pubmed: 16783704 ] |
METHODS AND RESULTS:
A new matrine-type alkaloid, (-)-14 beta-hydroxyoxymatrine (1), was isolated from the roots and rhizomes of Sophora tonkinensis Gapnep. (Leguminosae), together with five known matrine-type alkaloids, (-)-14 beta-hydroxymatrine (2), (+)-oxymatrine (3), (+)-matrine (4), (+)-Sophoranol (5), and (-)-5 alpha-hydroxysophocarpine ( 6), as well as with two known cytisine-type alkaloids, (-)-cytisine (7) and (-)- N-methylcytisine (8). Their structures were elucidated by spectroscopic methods.
CONCLUSIONS:
Compounds 1, 5 and 7 showed potent anti-HBV activity with an inhibitory potency against HBsAg secretion of 22.6 %, 31.1 % and 33.2 %, and against HBeAg secretion of 30.4 %, 26.3 % and 27.8 %, respectively. |
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