2-methylhept-1-en-6-yn-3-one

5-(2-prop-1-en-2-yl-1,3-dioxolan-2-yl)pent-2-yn-1-ol

2-(5-bromopent-3-ynyl)-2-prop-1-en-2-yl-1,3-dioxolane

8-[(2-ethynyl-5-methoxyphenyl)methoxy]-2-methyloct-1-en-6-yn-3-one

2-but-3-ynyl-2-prop-1-en-2-yl-1,3-dioxolane