New pyranoanthocyanins from blackcurrant seeds

Tetrahedron Letters

Volumn 43, Issue 41, 2002, Pages 7341-7344

  Lu, Yinrong ^a   Foo, L ^a   Sun, Yan ^a  

^a CALLAGHAN INNOVATION   (New Zealand)

Author keywords

Blackcurrant (Ribes nigrum); Grossulariaceae; NMR; Pyranoanthocyanins; Pyranocyanin C and D; Pyranodelphinin C and D; Synthesis

Indexed keywords

ANTHOCYANIN; BLACK CURRANT EXTRACT; PARA COUMARIC ACID; PYRAN DERIVATIVE; PYRANOCYANIN C; PYRANOCYANIN D; PYRANODELPHININ C; PYRANODELPHININ D; UNCLASSIFIED DRUG;

ANALYTIC METHOD; ARTICLE; CARBON NUCLEAR MAGNETIC RESONANCE; COLOR; CYCLIZATION; DECARBOXYLATION; DRUG ISOLATION; DRUG STRUCTURE; DRUG SYNTHESIS; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; HYDROGENATION; PLANT SEED; POLYMERIZATION; PROTON NUCLEAR MAGNETIC RESONANCE; WINE;

GROSSULARIACEAE; RIBES; RIBES NIGRUM;

EID: 0037037954     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(02)01721-5     Document Type: Article

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11. 13C NMR (75 MHz): δ 163.79 (C-2), 135.31 (C-3), 149.59 (C-3a), 98.51 (C-4), 169.75 (C-5), 154.88 (C-6a), 101.36 (C-7), 168.47 (C-8), 101.59 (C-9), 154.13 (C-9a), 108.79 (C-9b), 122.05 (C-1′), 118.82 (C-2′), 146.89 (C-3′), 153.19 (C-4′), 116.90 (C-5′), 126.02 (C-6′), 122.60 (C-7′), 131.87 (C-8′/12′), 118.28 (C-9′/11′), 165.79 (C-10′), 106.34 (C-1′′), 75.88 (C-2′′), 78.19 (C-3′′), 71.68 (C-4′′), 78.85 (C-5′′), 63.11 (C-6′′).
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