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Xin X.L.,Biotechnology Application Center | Yang G.,Biotechnology Application Center | Gou Z.P.,Guangdong Medical College | Yao J.H.,Dalian Medical University | And 2 more authors.
Magnetic Resonance in Chemistry | Year: 2010

Five hydroxylated derivatives of glycyrrhetinic acid by Mucor polymorphosporus were isolated. Among them, 6β, 7β- dihydroxyglycyrrhentic acid (2) and 27-hydroxyglycyrrhentic acid (3) are new compounds. Their chemical structures were identified by spectral methods including 2D-NMR. Copyright © 2009 John Wiley & Sons, Ltd.


Shi Y.,Beijing University of Chemical Technology | Xin X.,Biotechnology Application Center | Yuan Q.,Beijing University of Chemical Technology
Biotechnology Letters | Year: 2012

The highest lycopene production in mated cultures of Blakeslea trispora was 578 mg/l by adding 42 mg geraniol/l to the medium after 48 h of growth. The control gave 317 mg/l. Adding isopentenyl alcohol at 40 mg/l, mevalonic acid at 17. 5 mg/l or dimethyl allyl alcohol at 150 mg, each after 36 h growth, gave lycopene yields 62, 45 and 47%, respectively, higher than the control. © 2011 Springer Science+Business Media B.V.


Xin X.-L.,Biotechnology Application Center | Deng S.,Dalian Medical University | Zhang B.-J.,Dalian Medical University | Huang S.-S.,Dalian Medical University | And 6 more authors.
Natural Product Communications | Year: 2011

Biotransformation of deoxyandrographolide (1) by Alternaria alternata AS 3.4578 gave five derivatives identified by spectral methods including 2D NMR as the known dehydroandrographolide (2) and 9β-hydroxy-dehydroandrographolide (3) and the new compounds 9β-hydroxy-deoxyandrographolide (4), 3α,17,19-trihydroxy-8,13-ent-labdadien-15,16-olide (5) and 3-oxo-9̀-hydroxy-deoxyandrographolide (6).


Ma X.C.,Dalian Medical University | Gou Z.P.,Guangdong Medical College | Wang C.Y.,Dalian Medical University | Yao J.H.,Dalian Medical University | And 3 more authors.
Chinese Chemical Letters | Year: 2010

A new ent-labdane diterpenoid lactone was isolated from Andrographis paniculata. Its structure was identified on the basis of spectral data including 2D NMR. © 2010 Xiao Chi Ma.


Xin X.-L.,Biotechnology Application Center | Cui X.,Woosuk University | Wang C.,Dalian Medical University | Zhang B.-J.,Dalian Medical University | And 6 more authors.
Journal of Asian Natural Products Research | Year: 2011

Biotransformation of deoxyandrographolide (1) by Fusarium graminearum AS 3.4598 was investigated in this paper. And five transformed products of 1 by F. graminearum AS 3.4598 were obtained. Their chemical structures were characterized as 3-oxo-8α,17β-epoxy-14-deoxyandrographolide (2), 3-oxo-14-deoxyandrographolide (3), 3-oxo-17,19-dihydroxyl-8,13-ent-labdadien-15, 16-olide (4), 1β-hydroxyl-14-deoxyandrographolide (5), and 7β-hydroxyl-14-deoxyandrographolide (6) by spectral methods including 2D NMR. Among them, products 2, 4, and 5 are new. © 2011 Taylor &Francis.

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