Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The SAR and pharmacokinetic profiles of a series of multi-isoform PI3K inhibitors based on a 3,4-dihydro-2H-benzo[1,4]oxazine scaffold are disclosed. ... The SAR and pharmacokinetic profiles of a series of multi-isoform PI3K inhibitors based on a 3,4-dihydro-2H-benzo[1,4]oxazine ...