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Volumn 51, Issue 12, 2010, Pages 1585-1588

Chemistry of andrographolide: formation of novel di-spiropyrrolidino and di-spiropyrrolizidino-oxindole adducts via one-pot three-component [3+2] azomethine ylide cycloaddition

Author keywords

2D NMR; Andrographolide; Azomethine ylide; Dipolar cycloaddition; Dispiro oxindole

Indexed keywords

AMINO ACID; ANDROGRAPHOLIDE; AZOMETHINE YLIDE; ISATIN DERIVATIVE; OXINDOLE; PROLINE; PYRROLIDINE DERIVATIVE; SARCOSINE; SPIRO COMPOUND;

EID: 76649091565     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2010.01.052     Document Type: Article
Times cited : (59)

References (49)
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    • note
    • General method of preparation: A mixture of 1 (0.58 mmol, 200 mg), isatin (0.6 mmol, 90 mg), and proline (0.61 mmol, 70 mg) or sarcosine (0.61 mmol, 54 mg) was dissolved in methanol-water (90:10) and heated to reflux for almost 24 h. After completion of the reaction as evident from TLC, the solvent was removed in vacuum. The crude product was subjected to column chromatography using chloroform-methanol (0.5% methanol in chloroform) as eluant. The product was crystallized from acetonitrile-benzene mixture.
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    • note
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.