Water → HCID 59953052, compound

Participants

Reaction Steps

A stirred suspension of 32 (0.210 g, 0.500 mmol) in dioxane (5.0 mL), under nitrogen was treated with Lawesson's Reagent (0.202 g, 0.500 mmol), refluxed for 4 h and concentrated in vacuo. The residue was chromatographed on silica gel with mixctures of MeOH—NH4OH—CHCl3 containing 1-10% MeOH and 0.1-0.5% NH4OH and the resulting product was crystallized from MeOH—CHCl3—EtOAc to give 0.0491 g of 3: mip 218.5° C.; HR FAB MS theory for C19H22FN5O4S (M+): 435.1376; found 435.1370. Anal. calcd for C19H22FN5O4S. 0.5 H2O: C, 51.34; H, 5.21; N. 15.76. Found: C, 51.69; H, 5.00; N, 15.25.

Provenance & Evidence