Eight compounds structurally related to protein kinase C inhibitor MDL 27032 and substituted with indole moieties were synthesized. Their activities towards protein kinase C (PKC) and protein kinase A (PKA) were determined. Their effect on PKC-mediated contraction of rat tracheal smooth muscle, their antiproliferative activity on two murine tumor cell lines, melanoma B16 and leukemia P388 and their antimicrobial activity on a gram- ...