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Volumn 44, Issue 47, 2003, Pages 8539-8543

A facile access to ureido sugars. Synthesis of urea-bridged β-cyclodextrins

Author keywords

Aqueous two phase system; Cyclodextrin; Sugar isocyanates; Sugar ureas; Triphosgene

Indexed keywords

6 DEOXY 6 [3 (BETA GLUCOPYRANOS 2 YL)UREIDO] BETA CYCLODEXTRIN; ALIPHATIC AMINE; AROMATIC AMINE; BETA CYCLODEXTRIN DERIVATIVE; CARBOHYDRATE DERIVATIVE; GLUCOSE DERIVATIVE; ISOCYANATE; UNCLASSIFIED DRUG; UREA DERIVATIVE;

EID: 0142245442     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2003.09.140     Document Type: Article
Times cited : (24)

References (32)
  • 20
    • 85030970657 scopus 로고    scopus 로고
    • note
    • +.
  • 26
    • 85030966293 scopus 로고    scopus 로고
    • note
    • 3 (12 mL) at 0°C in an ice bath was added solid triphosgene (0.22 mmol) in a single portion. After 10 min of stirring, butylamine, p-toludine, or the corresponding hydrohalides 5, 6, 18, 19 (0.66 mmol) were added in a single portion. For the preparation of D-glucosamine derived ureas 9-14 the coupling with the amines was performed at rt for 10 min; for the preparation of glycopyranosyl ureas 22-27 the coupling of the isocyanate with the amines was carried out at 0°C for 20 min. Conventional work-up and column chromatography afforded ureas 9-14 and 22-27.
  • 27
    • 85030957003 scopus 로고    scopus 로고
    • note
    • +).
  • 32
    • 85030972147 scopus 로고    scopus 로고
    • note
    • 2O: C, 47.16; H, 5.73; N, 3.79. Found: C, 47.26; H, 5.61; N, 3.83.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.