C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
260/61
C07J 9/00 (2006.01) C07J 53/00 (2006.01)
Patent
CA 1127148
TITLE PROCESS FOR SEPARATING STIGMASTEROL-DERIVED PRODUCTS ABSTRACT OF THE DISCLOSURE This invention relates to the separation of crude mixtures of sterols, and more particularly it relates to the removal of stigmasterol derived products from crude mixtures of sterols. The present invention relates more specifically to a process for separating stigmasterol-derived products from phytosterol materials containing mixtures of stigmasterol, sitosterol and campesterol. These mixtures are reacted to form the corresponding mixture of phytosterol i-methyl ethers. The mixed phytosterol i-methyl ethers are reacted by ozonolysis to form the stigmasterol-derived aldehyde material, 6-.beta.-methoxy- 3.alpha.,5.alpha.-cyclodinorcholanaidehyde, which can be isolated from the phytosterol i-methyl ethers by either chromatography or by treatment with sodium bisulfite and extraction with a suitable organic solvent such as toluene.
345380
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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