摘要:
Prostaglandins such as 9-deoxo-9-methylene-16,16-dimethyl-PGE 2 , PGE 2 and PGF 2α are prepared by a novel process, from D-glucose. The process involves a number of steps, including the preparation of novel intermediates including 2,3-disubstituted-4,5-tetrahydrofurandiols protected with the, for example, 2,2-propylidene radical.
摘要:
The invention is a process to produce 3-alkylamino-2-piperazinylpyridines (III), where R 3 is -CH 2 -CH 3 or -CH(CH 3 ) 2 , and a process to purify them. The 3-alkylamino-2-piperazinylpyridines (III) are used in the production of known compounds useful for treating individuals who are HIV positive.
摘要:
17β-Cyano-17α-hydroxy steroids (I) are transformed to 17α-halo silyl ethers (II) which are intermediates useful in the production of progesterones (V), 17-hydroxyprogesterones (VI), corticoids (VII) and 21-halo corticoids (III) which can readily be transformed to corticoids (VII).
摘要:
15-Keto prostaglandin intermediates are stereo-specifically reduced using a borohydride and a lanthanide salt such as cerium trichloride, yielding a preponderance of the 15α epimer.
摘要:
Prostaglandins such as 9-deoxo-9-methylene-16,16-dimethyl-PGE 2 , PGE 2 and PGF 2α are prepared by a novel process, from D-glucose. The process involves a number of steps, including the preparation of novel intermediates including 2,3-disubstituted-4,5-tetrahydrofurandiols protected with the, for example, 2,2-propylidene radical.