Synlett 2012; 23(19): 2808-2810
DOI: 10.1055/s-0032-1317493
letter
© Georg Thieme Verlag Stuttgart · New York

Sulfoximine- and Sulfilimine-Based DAPSON Analogues; Syntheses and Bioactivities

Xiao Yun Chen
a   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany   Fax: +49(241)8092391   Email: carsten.bolm@oc.rwth-aachen.de
,
Helmut Buschmann
b   Sperberweg 15, 52076 Aachen, Germany
,
Carsten Bolm*
a   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany   Fax: +49(241)8092391   Email: carsten.bolm@oc.rwth-aachen.de
› Author Affiliations
Further Information

Publication History

Received: 27 August 2012

Accepted after revision: 27 September 2012

Publication Date:
09 November 2012 (online)


Abstract

Sulfoximine- and sulfilimine-based diamino-diphenyl sulfone (DAPSON) analogues have been prepared and their COX-1 and COX-2 inhibition potencies as well as LTB4 and TNF binding properties were studied. Furthermore, their antiproliferative activities on cancer cell growth were investigated. Neither compounds showed significant bioactivities.

Supporting Information

 
  • References

  • 1 Fromm E, Wittmann J. Ber. Dtsch. Chem. Ges. 1908; 41: 2264
  • 3 Wozel G. Dapson . Georg Thieme Verlag; Stuttgart: 1996
  • 4 Wozel G. Dermatol. Clin. 2010; 28: 599
  • 5 Hooper M. Chem. Soc. Rev. 1987; 16: 437
  • 10 General procedure for the synthesis of N-cyano sulfoximine from the corresponding sulfide: Step 1: To a solution of sulfide (1 mmol) and NH2CN (63.0 mg, 1.5 mmol) in DMF (5 mL), PhI(OAc)2 (354.3 mg, 1.1 mmol) was added. The reaction was stirred at 0 °C for 30 min and then warmed to r.t. (substrate conversion was monitored by TLC). When the starting material was no longer consumed, the reaction mixture was diluted with H2O (30 mL) and extracted with CH2Cl2 (4 × 15 mL). The combined organic layers were washed with sat. NaHCO3, H2O, and brine, and dried over MgSO4. The purified sulfilimine was obtained by silica gel column chromatography. Step 2: To a stirring solution of N-cyanosulfilimine (1 mmol) in MeOH (10 mL) was added K2CO3 (414.6 mg, 3.0 mmol) and MCPBA (258.9 mg, 1.5 mmol) at 0 °C. The mixture was stirred at room temperature until the starting material was consumed (ca. 6 h). The solvent was then removed under reduced pressure, H2O (20 mL) was added and the resulting mixture was extracted with CH2Cl2 (4 × 15 mL). The combined organic layers were dried over MgSO4, and column chromatography (silica gel) provided the purified N-cyano sulfoximine.

    • These assays were performed by Ricerca Biosciences, Chicago, USA. Methods:
    • 11a COX-1: human platelets (source); 100 μM arachidonic acid (substrate); EIA quantification of PGE2 (quantification method).
    • 11b COX-2: human recombinant insect Sf21 cells (source); 0.3 μM arachidonic acid (substrate); EIA quantification of PGE2 (quantification method).
    • 11c LTB4: human U937 cells (source); 0.2 nM [3H] LTB4 (ligand); radioligand binding (quantification method).
    • 11d TNF: human U937 cells (source); 0.028 nM [125I] TNF-α (ligand); radioligand binding (quantification method). For details see the Supporting Information.
  • 13 For the program’s website, see: http://dtp.cancer.gov.
  • 14 For the original One Dose Mean Graphs provided by the NCI, see the Supporting Information.
  • 15 Roychowdhury S, Cram AE, Aly A, Svensson CK. Drug Metabol. Disposition 2007; 35: 1463