## Abstract Biphenyl‐2,2′,3,3′,5,5′,6,6′‐^2^H~8~ was prepared from biphenyl‐d~10~. Initial bromination of biphenyl‐d~10~ followed by hydrogenolysis of the 4,4′‐dibromobiphenyl‐d~8~ with lithium aluminum hydride gave the desired product in 40% overall yield.
Synthesis of [5,6-3H2]CP-88,818 (β-[5,6-3H2]tigogenin cellobioside)
✍ Scribed by Peter A. McCarthy
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- French
- Weight
- 417 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
CP‐88,818 (β‐tigogenin cellobioside) is a novel hypocholesterolemic and anti‐atherosclerosis agent which acts by inhibiting the absorption of dietary and biliary cholesterol. While the exact mechanism of this inhibition is unclear, CP‐88,818 is believed to block cholesterol absorption without entering the body. In order to prove this hypothesis, radiolabelled CP‐88,818 was needed. Herein, we report the stereoselective synthesis of [5,6‐^3^H~2~]CP‐88,818 in four steps from diosgenin acetate.
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