Abstract: A method for selectively inhibiting a kinase is disclosed, which comprises contacting a composition containing a kinase with a compound of the formula: ##STR1## wherein: R.sub.1 is lower alkyl, lower hydrocarbyl, aryl lower alkyl, heteroaryl lower alkyl, 5- or 6-membered heterocyclic aromatic, polyaromatic, polyaromatic carbonyl, polyheteroaromatic or polyheteroaromatic carbonyl; R.sub.2 is lower alkyl, lower hydrocarbyl, aryl lower alkyl, heteroaryl lower alkyl, 5- or 6-membered heterocyclic aromatic, lower hydrocarboyl, 5- or 6-membered heterocyclic aromatic carbonyl, polyaromatic or polyheteroaromatic; R.sub.3 is H or lower alkyl; R.sub.5 is H, lower alkyl, lower hydrocarbyl, aryl lower alkyl, heteroaryl lower alkyl, 5- or 6-membered heterocyclic aromatic, halogen, or cyano; and R.sub.6 is H or lower hydrocarboyl.

Abstract: The present invention is directed towards immunoglobulin polypeptides that specifically bind to the extracellular domain of the human type beta PDGF receptor. The binding of the immunoglobulin polypeptides to the receptor inhibits PDGF-induced (or stimulated) receptor activation as indicated by inhibition of receptor phosphorylation and dimerization, and by inhibition of PDGF-mediated mitogenesis, chemotaxis and migration of cells displaying the human PDGF type beta receptor on the cell surface. Nucleic acids encoding the immunoglobulin polypeptides are also included in the invention. The immunoglobulin polypeptides have diagnostic and therapeutic uses.

Abstract: A method for selectively inhibiting a kinase is disclosed, which comprises contacting a composition containing a kinase with a molecule of the formula ##STR1## wherein R.sub.1 is H, lower alkyl, or lower alkanoyl; R.sub.2 is H, lower alkyl, or lower alkanoyl; R.sub.3 and R.sub.4 together represent a cis double bond or --O-- or each of R.sub.3 and R.sub.4 independently represents H or OR; R.sub.5 is .dbd.O, .dbd.S, or --H, --OR; R.sub.6 and R.sub.7 together represent a double bond or --O-- or each of R.sub.6 and R.sub.7 independently represents H or OR; R.sub.4 and R together represent a double bond or --O-- or each of R.sub.8 and R.sub.9 independently represents H or OR; and each R independently represents H, lower alkyl, or lower alkanoyl.

Abstract: A method for selectively inhibiting a kinase is disclosed, which comprises contacting a composition containing a kinase with a molecule of the formula ##STR1## wherein R.sub.1 is H, lower alkyl, or lower alkanoyl; R.sub.2 is H, lower alkyl, or lower alkanoyl; R.sub.3 and R.sub.4 together represent a cis double bond or --0-- or each of R.sub.3 and R.sub.4 independently represents H or OR; R.sub.5 is .dbd.O, .dbd.S, or --H, --OR; R.sub.6 and R.sub.7 together represent a double bond or --O-- or each of R.sub.6 and R.sub.7 independently represents H or OR; R.sub.8 and R.sub.9 together represent a double bond or --O-- or each of R.sub.8 and R.sub.9 independently represents H or OR; and each R independently represents H, lower alkyl, or lower alkanoyl.

Abstract: A method for selectively inhibiting a kinase is disclosed, which comprises contacting a composition containing a kinase with a molecule of the formula ##STR1## wherein R.sub.1 is H, lower alkyl, or lower alkanoyl; R.sub.2 is H, lower alkyl, or lower alkanoyl; R.sub.3 and R.sub.4 together represent a cis double bond or --O-- or each of R.sub.3 and R.sub.4 independently represents H or OR; R.sub.5 is .dbd.O, .dbd.S, or --H, --OR; R.sub.6 and R.sub.7 together represent a double bond or --O-- or each of R.sub.6 and R.sub.7 independently represents H or OR; R.sub.8 and R.sub.9 together represent a double bond or --O-- or each of R.sub.8 and R.sub.9 independently represents H or OR; and each R independently represents H, lower alkyl, or lower alkanoyl.