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Volumn 7, Issue 3, 2005, Pages 360-363

One-step construction of peptidomimetic 5-carbamoyl-4-sulfonyl-2- piperazinones

Author keywords

[No Author keywords available]

Indexed keywords

PIPERAZINE DERIVATIVE;

EID: 20044388356     PISSN: 15204766     EISSN: None     Source Type: Journal    
DOI: 10.1021/cc0500147     Document Type: Article
Times cited : (26)

References (24)
  • 2
    • 0001503281 scopus 로고    scopus 로고
    • Kazmierski, W. M., Ed.; Methods in Molecular Medicine Series, Humana Press: Totowa, NJ
    • Fobian, Y. M.; Moeller, K. D. In Peptidomimetics Protocols; Kazmierski, W. M., Ed.; Methods in Molecular Medicine Series, Vol. 23; Humana Press: Totowa, NJ, 1998; pp 259-280.
    • (1998) Peptidomimetics Protocols , vol.23 , pp. 259-280
    • Fobian, Y.M.1    Moeller, K.D.2
  • 3
    • 0034641447 scopus 로고    scopus 로고
    • For an illustration of ethylenediamine cyclizations with α-haloacetates, see: Dinsmore, C. J.; Zartman C. B. Tetrahedron Lett. 2000, 41, 6309-6312.
    • (2000) Tetrahedron Lett. , vol.41 , pp. 6309-6312
    • Dinsmore, C.J.1    Zartman, C.B.2
  • 4
    • 0034598022 scopus 로고    scopus 로고
    • Using organoboronates in place of α-haloacid component has been reported; see: Petasis, N. A.; Patel, Z. D. Tetrahedron Lett. 2000, 41, 9607-9611.
    • (2000) Tetrahedron Lett. , vol.41 , pp. 9607-9611
    • Petasis, N.A.1    Patel, Z.D.2
  • 12
    • 20044385948 scopus 로고    scopus 로고
    • Nippon Zoki Pharmaceutical Co., Ltd. EP 1338592, 2003
    • Nippon Zoki Pharmaceutical Co., Ltd. EP 1338592, 2003; Chem. Abstr. 2003, 139, 197510J.
    • (2003) Chem. Abstr. , vol.139
  • 16
    • 20044383590 scopus 로고    scopus 로고
    • JP 2003508353, 2003; EP 1208097, 2002; WO 0107436, 2001; WO 0032590, 2000
    • (b) Spada, A. P.; Becker, M. R.; Myers, M. R.; Ewing, W. R. JP 2003508353, 2003; EP 1208097, 2002; WO 0107436, 2001; WO 0032590, 2000.
    • Spada, A.P.1    Becker, M.R.2    Myers, M.R.3    Ewing, W.R.4
  • 19
    • 20044363634 scopus 로고    scopus 로고
    • Mochida Pharmaceutical Co., Ltd. WO 0100616, January 4, 2004
    • Mochida Pharmaceutical Co., Ltd. WO 0100616, January 4, 2004.
  • 21
    • 20044373669 scopus 로고    scopus 로고
    • note
    • The final 5-carbamoyl-4-sulfonyl-2-piperazinones 4 were prepared according to the following general procedure: A solution of an N-sulfonyl-N-(2-oxopropyl)glycine 1 (1 mmol), a primary aromatic or aliphatic amine 2 (1 mmol), and an isonitrile 3 (1 mmol) in anhydrous methanol (3-5 mL) was stirred at room temperature for 8 h. The precipitate formed was separated by filtration; washed with a small amount of cold methanol, followed by ether; and air-dried (in the cases when the product did not precipitate from the reaction mixture, the solvent was removed in vacuo, and the residue was then solidified upon addition of a small amount of ether prior to filtration). The yield of the obtained solid products was 45-75% with at least 95% purity, as demonstrated by LC/MS analysis.
  • 22
    • 20044393846 scopus 로고    scopus 로고
    • The keto acids 1 used in this study are commercially available from ChemDiv. Inc. (http://www.chemdiv.com).
  • 23
    • 20044364976 scopus 로고    scopus 로고
    • note
    • 1H NMR spectroscopy.
  • 24
    • 20044392685 scopus 로고    scopus 로고
    • note
    • Our preliminary results on similar multicomponent reactions involving ketocarboxylic acids derived from α-amino acids other than glycine indicated that such processes provide the desired products as mixtures of diastereomers. Because the latter were found difficult to separate, a possibility of attaining some degree of diastereocontol is being currently investigated.


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