256373-95-2Relevant academic research and scientific papers
Novel synthesis of 1-(1,2,3,5,6,7-hexahydro-s-indacen-4-yl)-3-[4-(1-hydroxy-1-methyl-ethyl) furan-2-sulfonyl]urea, An anti-inflammatory agent
Urban, Frank J.,Jasys, V. John,Raggon, Jeffrey W.,Buzon, Richard A.,Hill, Paul D.,Eggler, James F.,Weaver, John D.
, p. 2029 - 2043 (2007/10/03)
A novel synthesis of the anti-inflammatory agent 1-(1,2,3,5,6,7-hexahydro-s-indacen-4-yl)-3-[4-(1-hydroxy-1-methyl-ethyl)- furan-2-sulfonyl]urea 1 is described. Sulfonamide 5 was prepared starting from ethyl 3-furoate 2. Key steps were a one-pot sulfonylation with chlorosulfonic acid in methylene chloride followed by pyridinium salt formation and reaction with phosphorus pentachloride to provide ethyl 2-(chlorosulfonyl)-4-furoate 7. This sulfonyl chloride was treated with ammonium bicarbonate to form sulfonamide 8, followed by treatment with excess methyl magnesium chloride to provide 4-(1-hydroxy-1-methyl-ethyl)-furan-2-sulfonamide 5. 4-Isocyanato-1,2,3,5,6,7-hexahydro-s-indacene 16 was prepared from indan in five steps. The formation of the desired sulfonyl urea was carried out both with the isolated isocyanate 16 and via an in situ method.
Efficient synthesis of furan sulfonamide compounds useful in the synthesis of new IL-1 inhibitors
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, (2008/06/13)
An efficent synthesis of furan sulfonamide compounds of formula comprising reacting a compound of formula 11 with a Grignard reagent in a reaction inert solvent, wherein R' is (C1-C6)alkyl. The compound of formula II is prepared by reacting a compound of formula III with a compound of formula IV wherein R' is (C1-C6)alkyl with a chorinating reagent and an acid scaverger in an inert solvent. The invention also includes a novel compound of the formula wherein R' is (C1-C6)alkyl and Q is halo, hydroxy or amino.
A synthesis of furan sulfonamide compounds useful in the synthesis of IL-1 inhibitors
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, (2008/06/13)
An efficent synthesis of furan sulfonamide compounds of formula ???comprising reacting a compound of formula II with a Grignard reagent in a reaction inert solvent, wherein R' is (C1-C6)alkyl. The compound of formula II is prepared by reacting a compound of formula III with a compound of formula IV wherein R' is (C1-C6)alkyl with a chorinating reagent and an acid scaverger in an inert solvent. The invention also includes a novel compound of the formula ???wherein R' is (C1-C6)alkyl and Q is halo, hydroxy or amino.
