Fires In Inclined Trenches: The Effects Of Trench And Burner Geometry On The Critical Angle

Abstract

The structures of two new diterpenoids [glaucocalyxin X(1) and glaucocalyxin F(2)] from the whole plant of Rabdosia japonica (Burm. f.) Hara var. glaucocalyx (Maxim.) Hara. were confirmed furthermore on the basis of (1)H-(1)H COSY and NOESY spectrum, respectively. Compounds 1 and 2 were tested in vitro for their cytotoxicity against human tumour cell lines HL-60,6T-CEM, LOVO and A549. Compound 1 exhibited good cytotoxicity with IC(50) values of 3.16, 1.57,1.73 and 3.31 mu g/mL, respectively. but compound 2 showed no activity against the above cancer cell lines with IC(50) values all higher than 100 mu g/mL.