An examination of three quercus species of Hong Kong

Abstract From the leaves of the following have been isolated: Quercus bambusaefolia : friedelin, firiedelan-3α-ol, friedelan-3β-ol, β-sitosterol, and a higher alcohol A1 ; Q . chiampioni : the higher alcohol A1, a higher ketone K1 ; Q. myrsinaefolia : friedelan-3α-ol, friedelan-3β-ol, β-sitosterol, and the higher ketone K1.