hepta-5,6-dien-1-ol

2-ethenyloxane

tetrahydropyrannyloxy-9 nonadiene-3,4 ol-1

(tetrahydropyrannyloxy-4 butyl)-2 dihydro-5,6-2H-pyranne

(tetrahydropyrannyl-2)-4 pentene-3 oate d'ethyl