(S)-4-amino-6-((1-(5-chloro-4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)ethyl)amino)pyrimidine-5-carbonitrile is claimed as a highly selective, PI3Kδ inhibitor. It is claimed to be useful in the treatment of asthma and appears intended for oral administration. ... ...

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