Isolation from Salvia officinalis and identification of two diterpenes which inhibit t-butylbicyclophosphoro[35S]thionate binding to chloride channel of rat cerebro-cortical membranes in vitro - Rutherford,D.M.; Nielsen,M.P.; Hansen,S.K.; Witt,M.R.; Bergendorff,O.; Sterner,O. (Neurosci Lett, 1992)