Compounds of a certain formula 1,
in which R1, R2, R3, R31, R4, R5, R51, R6 and R7 have the meanings indicated in the description, are novel effective PDE4 inhibitors.
Process for renaturation of recombinant, disulfide containing proteins at high protein concentrations in the presence of amines
申请人:Peters Jörg
公开号:US20050014933A1
公开(公告)日:2005-01-20
A method for renaturation of proteins comprising adding to a solution of denatured, chemically modified or reduced proteins a refolding buffer containing a primary, secondary or tertiary amine. Said method has been applied, for example, to interleukin-4 and bovine pancreatic trypsin inhibitor (BPTI), wich were previously (i) solubilized in the presence of guanidinium hydrochloride as chaotronic agent, and (ii) subjected to sulfitolysis.