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Volumn 52, Issue 26, 1996, Pages 8907-8924

5-Fluorouracil derivatives. 1. Acyclonucleosides through a tin (IV) chloride-mediated regiospecific ring opening of alkoxy-1,4-diheteroepanes

Author keywords

1,4 diheteroepanes; 5 Fluorouracil; Acyclonucleosides; Antitumour agents; Regiospecificity

Indexed keywords

1 [[3 (2 HYDOXYETHOXY) 1 CYCLOPENTOXY]PROPYL] 5 FLUOROURACIL; ACYCLIC NUCLEOSIDE; FLUOROURACIL DERIVATIVE; UNCLASSIFIED DRUG;

EID: 0029952618     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4020(96)00439-5     Document Type: Article
Times cited : (26)

References (48)
  • 19
    • 0041073389 scopus 로고    scopus 로고
    • 1a-b cristallize after standing in vacua in a desiccator for a long period of time, such as two or three months
    • 1a-b cristallize after standing in vacua in a desiccator for a long period of time, such as two or three months.
  • 22
    • 4244029764 scopus 로고
    • Eur. Pat. Appl. WO 91 17,147 (Cl. CO7D239/54)
    • Universidad de Granada, Eur. Pat. Appl. WO 91 17,147 (Cl. CO7D239/54); via Chem. Abstr. 1992, 117, 49156d.
    • (1992) Via Chem. Abstr. , vol.117
  • 29
    • 0040479173 scopus 로고    scopus 로고
    • note
    • It has to be noted that the alkoxy-1,4-diheteroepanes 1a-g are very volatile substances, although such saturated heterocycles were isolated by distillation under diminished pressure (bp's ranging from 45 to 70 °C/16 torr). After purification by flash chromatography, much care has to be taken on rotaevaporating off the eluant (ether/hexane mixtures) and the water bath must not be warmed at all. Actually, only five minutes in the desiccator under vacum is recommended in order to avoid losses of the materials. Microanalyses were not carried out on these cycloacetals due to the impossibility of stabilizing the weights. Nevertheless the NMR spectra always showed sample homogeneities
  • 36
    • 0004302015 scopus 로고    scopus 로고
    • Tripos Associates, Inc.: St. Louis, MO
    • Sybyl Molecular Modelling; Tripos Associates, Inc.: St. Louis, MO
    • Sybyl Molecular Modelling
  • 39
    • 0039294266 scopus 로고    scopus 로고
    • This surprising conformational behaviour is due to a poor parametrization of the Tripos force field when we attempt to reproduce the gauche effect of the O-C-C-O fragment
    • This surprising conformational behaviour is due to a poor parametrization of the Tripos force field when we attempt to reproduce the gauche effect of the O-C-C-O fragment.
  • 44
    • 4244056671 scopus 로고
    • Bellringer, F. J.; Bewley, T. Brit. P. 713,833, 1954; via Chem. Abstr., 1958, 50, 6501c.
    • (1958) Via Chem. Abstr. , vol.50
  • 46
    • 0039886251 scopus 로고    scopus 로고
    • When the reaction time was shortened to 39 h, the mixture of trans- and cis-1d (trans cis ratio: 77/23 determined by glc) was obtained in 23.1% yield. No 2-(3-isopropoxy-2-propyl)-1,3-dioxolane was detected
    • When the reaction time was shortened to 39 h, the mixture of trans- and cis-1d (trans cis ratio: 77/23 determined by glc) was obtained in 23.1% yield. No 2-(3-isopropoxy-2-propyl)-1,3-dioxolane was detected.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.