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Volumn 49, Issue 31, 2008, Pages 4648-4651

A new domino-Knoevenagel-hetero-Diels-Alder reaction

Author keywords

[No Author keywords available]

Indexed keywords

2 ALLYLOXYBENZALDEHYDE; 3,5A,6,11B TETRAHYDRO 2H,5H CHROMENO[4',3':4,5]THIOPYRANO[2,3 D][1,3]THIAZOL 2 ONE; 4 THIOXO 1,3 THIAZOLIDIN 2 ONE; ACRYLIC ACID DERIVATIVE; ALDEHYDE DERIVATIVE; CITRONELLAL; THIAZOLE DERIVATIVE; THIAZOLIDINE DERIVATIVE;

EID: 45549086278     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2008.05.062     Document Type: Article
Times cited : (61)

References (28)
  • 17
    • 34250708916 scopus 로고    scopus 로고
    • Chem. Abstr. (2007) 836917
    • (2007) Chem. Abstr. , pp. 836917
  • 18
    • 45549091094 scopus 로고    scopus 로고
    • note
    • Preparation of (5aRS,8R,9aRS)-5,5,8-trimethyl-3,5,5a,6,7,8,9,9a-octahydro-2H-[2]benzoth iopyrano[3,4-d][1,3]thiazol-2-one (3). To a suspension of 10 mmol of 4-thioxo-2-thiazolidinone 1 in 10 ml of anhydrous acetonitrile, 13 mmol of citronellal 2 was added. Next, 5 mmol of EDDA in 10 ml of anhydrous acetonitrile was added under stirring. After 48 h, the reaction mixture was refluxed for 5 min and then cooled. The obtained precipitate was filtered off, washed with hexane and recrystallized from ethanol. Preparation of (5aRS,11bRS)-3,5a,6,11b-tetrahydro-2H,5H-chromeno[4′,3′:4,5] thiopyrano[2,3-d][1,3]thiazol-2-one (5b). A solution of 2-allyloxybenzaldehyde 4 (10 mmol) and thiazolidinone 1 (10 mmol) in acetic acid or acetonitrile (20 ml) was stirred at room temperature in the presence of a catalytic amount of triethyamine (10 mmol). The progress of the reaction was monitored by TLC. The solid product that formed was collected by filtration and recrystallized from dioxane.
  • 19
    • 45549105384 scopus 로고    scopus 로고
    • note
    • 2: C, 56.30; H, 4.00; N, 5.05. Found: C, 56.45; H, 4.15; N, 5.00.
  • 20
    • 45549109650 scopus 로고    scopus 로고
    • note
    • 2): 0.032, 0.096. Crystallographic data for the structure have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication number CCDC 655431. Copies of the data can be obtained, free of charge, on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: +44 (0)1233 336033 or e-mail deposit@ccdc.cam.ac.uk).
  • 23
    • 45549103693 scopus 로고    scopus 로고
    • note
    • Typical procedure: A solution of appropriate unsaturated aldehyde (12 mmol), triethylamine (10 mmol) and 4-thioxo-2-thiazolidinone 1 (10 mmol) was stirred at room temperature in acetic acid (20 ml) for 12 h. The progress of the reaction was monitored by TLC. The solid product that formed was collected by filtration and recrystallized from ethanol.
  • 24
    • 45549083395 scopus 로고    scopus 로고
    • note
    • +).
  • 25
    • 45549090367 scopus 로고    scopus 로고
    • note
    • 50 = -4.27). These preliminary results are promising and need further investigation of the antitumor activity of reported and related compounds.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.