The selective and efficient oxidation of flavanones with dimethyldioxirane (DMD) is reported. Aromatic rings carrying methoxy groups were selectively hydroxylated in neutral and acidic media. In the latter case inversion of chemoselectivity with respect to the benzylethereal position was observed. This behaviour was exploited to obtain polyhydroxylated flavanones, which are compounds with potential antioxidant and biological properties. (C) 2000 Elsevier Science Ltd. All rights reserved.
机构:
Int Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Univ Appl Sci Zittau Gorlitz, Unit Math & Life Sci, D-02763 Zittau, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Barkova, Katerina
Kinne, Matthias
论文数: 0引用数: 0
h-index: 0
机构:
Int Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Kinne, Matthias
Ullrich, Rene
论文数: 0引用数: 0
h-index: 0
机构:
Int Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Ullrich, Rene
Hennig, Lothar
论文数: 0引用数: 0
h-index: 0
机构:
Univ Leipzig, Unit Chem & Mineral, D-04103 Leipzig, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Hennig, Lothar
Fuchs, Annett
论文数: 0引用数: 0
h-index: 0
机构:
Univ Appl Sci Zittau Gorlitz, Unit Math & Life Sci, D-02763 Zittau, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
Fuchs, Annett
Hofrichter, Martin
论文数: 0引用数: 0
h-index: 0
机构:
Int Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, GermanyInt Grad Sch Zittau, Dept Bio & Environm Sci, D-02763 Zittau, Germany
机构:
Zhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R ChinaZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China
Liu, Ling
Yao, Qiuping
论文数: 0引用数: 0
h-index: 0
机构:
Zhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R ChinaZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China
Yao, Qiuping
Ma, Zhongjun
论文数: 0引用数: 0
h-index: 0
机构:
Zhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R ChinaZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China
Ma, Zhongjun
Ikeda, Haruo
论文数: 0引用数: 0
h-index: 0
机构:
Kitasato Univ, Kitasato Inst Life Sci, 1-15-1 Kitasato, Sagamihara, Kanagawa 2520373, JapanZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China
Ikeda, Haruo
Fushinobu, Shinya
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biotechnol, Bunkyo Ku, 1-1-1 Yayoi, Tokyo 1138657, JapanZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China
Fushinobu, Shinya
Xu, Lian-Hua
论文数: 0引用数: 0
h-index: 0
机构:
Zhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R ChinaZhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Zhejiang, Peoples R China