7-benzyloxy-3-[(2R)-2-(tert-butoxycarbonylamino)propyl]-1-[2-hydroxypropyl]-1H-indole

5-<(4S,6R)-2,2,6-Trimethyl-1,3-dioxan-4-yl>-2-propanon

1-(2-Ethyl-2-methyl-[1,3]dioxolan-4-ylmethoxy)-propan-2-ol

1-{2-[2-(2-Ethyl-2-methyl-[1,3]dioxolan-4-ylmethoxy)-1-methyl-ethoxy]-1-methyl-ethoxy}-propan-2-ol

1-[2-(2-Ethyl-2-methyl-[1,3]dioxolan-4-ylmethoxy)-1-methyl-ethoxy]-propan-2-ol