Highly Diastereoselective 1,3-Dipolar Cycloaddition of a D-Galactose-Derived Nitrone with Dimethyl Maleate: Synthesis of Polyhydroxylated Perhydroazaazulenes
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作者:
Bande, Omprakash P.
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Univ Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, IndiaUniv Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, India
Bande, Omprakash P.
[1
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Jadhav, Vrushali H.
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Univ Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, IndiaUniv Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, India
Jadhav, Vrushali H.
[1
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Puranik, Vedavati G.
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Natl Chem Lab, Ctr Mat Characterizat, Pune 411008, Maharashtra, IndiaUniv Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, India
Puranik, Vedavati G.
[2
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Dhavale, Dilip D.
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Univ Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, IndiaUniv Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, India
Dhavale, Dilip D.
[1
]
机构:
[1] Univ Pune, Dept Chem, Garware Res Ctr, Pune 411007, Maharashtra, India
[2] Natl Chem Lab, Ctr Mat Characterizat, Pune 411008, Maharashtra, India
An intermolecular 1,3-dipolar cycloaddition of a D-galactose-derived nitrone with dimethyl maleate was found to be perfectly diastereoselective at the nitrone carbon to give exclusive formation of isoxazolidine. The N-O bond reductive cleavage in isoxazolidine followed by lactam reduction afforded a pyrrolidine ring skeleton with sugar appendage that on acetonide cleavage and reductive amino-cyclization gave hitherto unknown hydroxymethyl-substituted hexa- and pentahydroxy perhydroazaazulenes.
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Slovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, SlovakiaSlovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, Slovakia
Podolan, Gabriel
Fisera, Lubor
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Slovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, SlovakiaSlovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, Slovakia
Fisera, Lubor
Kozisek, Jozef
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Slovak Univ Technol Bratislava, Inst Phys Chem & Chem Phys, Bratislava 81237, SlovakiaSlovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, Slovakia
Kozisek, Jozef
Fronc, Marek
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Slovak Univ Technol Bratislava, Inst Phys Chem & Chem Phys, Bratislava 81237, SlovakiaSlovak Univ Technol Bratislava, Inst Organ Chem Catalysis & Petrochem, Bratislava 81237, Slovakia