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Volumn , Issue 12, 2009, Pages 1959-1963

Highly diastereoselective 1,3-dipolar cycloaddition of a D-galactose-derived nitrone with dimethyl maleate: Synthesis of polyhydroxylated perhydroazaazulenes

Author keywords

1,3 dipolar nitrone olefin cycloaddition (DNOC); Diastereoselectivity; Iminosugars; Inhibitors; Nitrone

Indexed keywords

AMPHOLYTE; AZULENE DERIVATIVE; CITRACONIC ACID; DIMETHYLMALEATE; GALACTOSE; HEXAHYDROXYPERHYDROAZAAZULENE DERIVATIVE; ISOXAZOLIDINE DERIVATIVE; LACTAM; NITRONE; PENTAHYDROXYPERHYDROAZAAZULENE DERIVATIVE; POLYHYDROXYLATED PERHYDROAZAAZULENE DERIVATIVE; PYRROLIDINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 67849093833     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-0029-1217541     Document Type: Article
Times cited : (12)

References (80)
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    • 1H NMR spectrum of crude compound obtained from evaporation of toluene, showed additional signals (<7%) corresponding to unreacted dimethyl maleate. However, no other signals corresponding to other diastereomers were detected.
    • 1H NMR spectrum of crude compound obtained from evaporation of toluene, showed additional signals (<7%) corresponding to unreacted dimethyl maleate. However, no other signals corresponding to other diastereomers were detected.
  • 80
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    • All new compounds have been characterised by IR, 1H NMR, 13C NMR, and elemental analysis. Selected Procedure and Analytical Data for Compound 5 A solution of nitrone 414 (2.0 g, 5.5 mmol) and dimethyl maleate (2.3 g, 16.5 mmol) in toluene (20 mL) was stirred under nitrogen atmosphere at r.t. for 5 h. The reaction mixture was concentrated under reduced pressure and purified by column chromatography (n-hexane-EtOAc, 85:15) to afford cycloadduct as a white solid (2.5 g, 89, mp 99-101°C; Rf, 0.7 (hexane-EtOAc, 6:4, α]D25 -83.5 (c 0.3, CHCl3, IR (KBr, 1753, 1728, 1494 cm-1. 1H NMR (300 MHz, CDCl 3, δ, 1.22 (s, 3 H, 1.30 (s, 3 H, 1.35 (s, 3 H, 1.50 (s, 3 H, 3.62 (dd, J, 8.1, 1.5 Hz, 1 H, 3.96 (s, 3 H, 3.99 (s, 3 H, 3.93-4.30 (m, 2 H, 4.17 (d, J, 13.5 Hz, 1 H, 4.27 dd, J, 4.8, 1.8 Hz, 1 H
    • 7: C, 45.29; H, 7.22. Found: C, 49.31; H, 7.30.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.