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Volumn 18, Issue 3, 2008, Pages 1124-1130

Syntheses of tetrahydrothiophenes and tetrahydrofurans and studies of their derivatives as melanocortin-4 receptor ligands

Author keywords

Binding affinity; Cyclization; Heterocycle; Melanocortin 4 receptor; Piperazinebenzylamine; Stereoisomer; Synthesis; Tetrahydrofuran; Tetrahydrothiophene

Indexed keywords

LIGAND; MELANOCORTIN 4 RECEPTOR; PIPERAZINE DERIVATIVE; TETRAHYDROFURAN DERIVATIVE; TETRAHYDROTHIOPHENE DERIVATIVE;

EID: 38749120255     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2007.11.128     Document Type: Article
Times cited : (16)

References (30)
  • 8
    • 38749102543 scopus 로고    scopus 로고
    • Ujjainwalla, F. 230thACS National Meeting, Washington, DC, USA. 2005, MEDI 275.
    • Ujjainwalla, F. 230thACS National Meeting, Washington, DC, USA. 2005, MEDI 275.
  • 10
    • 38749089604 scopus 로고    scopus 로고
    • note
    • The sulfoxide 17 consisted of about 1:1 S- and R-isomers based on TLC analysis. They were not separated.
  • 11
    • 38749150421 scopus 로고    scopus 로고
    • For experimental detail, see: Chen, C.; Tran, J. A.; Tucci, F. C.; Chen, C. W.; Jiang, W.; Marinkovic, D.; Arellano, M.; White, N. S. WO 2005/040109.
    • For experimental detail, see: Chen, C.; Tran, J. A.; Tucci, F. C.; Chen, C. W.; Jiang, W.; Marinkovic, D.; Arellano, M.; White, N. S. WO 2005/040109.
  • 12
    • 38749110563 scopus 로고    scopus 로고
    • note
    • 4, filtered, and concentrated in vacuo to afford trans-4-(4-chlorophenyl)-3-tetrahydrothiophenecarboxylic acid (trans-6) (625 mg, 96% yield).
  • 25
    • 38749146672 scopus 로고    scopus 로고
    • note
    • 4, filtered, and concentrated in vacuo. The product 1-[2-[(1S)-1-(S-tert-butylsulfinylamino)-3-methylbutyl]-4-(trifluoromethyl)phenyl]-4-{[trans-4-(4-chlorophenyl)-tetrahydro-3-thiophenyl]carbonyl}piperazine was obtained by flash column chromatography (hexane/EtOAc 9:1-1:1) as a white foam (319 mg, 43 % yield).The above compound in MeOH (5 mL) was treated with HCl (4.0 M in 1,4-dioxane, 0.2 mL) for 0.5 h and the solution was concentrated in vacuo. One-fifth of the product was purified by HPLC to afford the titled compound trans-35 (27.8 mg, 43% yield).
  • 29
    • 38749140068 scopus 로고    scopus 로고
    • note
    • Based on our previous work, there is only a small (2-fold) affinity difference between the 6-fluorophenylpiperazine and the 4-(trifluoromethyl)phenylpiperazine analogs. See Ref. 6.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.