0 :M ! 1 2 3 M 4 5 6 M 7 8 9 Figure 3. Chromatograms of ethoxy cholesterols Substrate: Silicagel G Solvents: Left--Cyclohexane/ethyl acetate (3 +2) Right--Benzene/acetone/water (85 q- 40 q- 1) Loads: M, 100 gg others, 10 gg. Kev: M=Product of the reaction between: Cholesterol (1 mole) and ethylene oxide (5 moles) 0 = Cholesterol 5 = Penta-ethoxy cholesterol 1 =Mono-ethoxv cholesterol 6=Hexa-ethoxy cholesterol 2=Bi-ethoxy cholesterol 7----Hepta-ethoxy cholesterol 3=Tri-ethoxy cholesterol 8----Octa-ethoxy cholesterol .4=Tetra-ethoxy cholesterol 9•Nona-ethoxy cholesterol Facing page 206
Figure 4. Chromatogram of polyethoxy cholesterols Substrate: Silicagel G Solvent: Acetone/benzene/water (60+40+3): three elutions Loads: M, 200 gg others, 10 gg Key: M=Product of the reaction between: Cholesterol (1 mole) and ethylene oxide (25 moles) N=Nona-ethoxy cholesterol D=Dodeca-ethoxy cholesterol P= Pentadeca-ethoxy cholesterol Facing page 207
Previous Page Next Page 
Purchased for the exclusive use of nofirst nolast (unknown)
From: SCC Media Library & Resource Center (library.scconline.org)