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US 5,705,659 AGranted
Intermediates for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof
AssigneeKorea Institute of Science and Technology
InventorsHokoon Park, Sun Ho Jung, Yong Sup Lee, Ki Hong Nam
Life of this patent
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Abstract
Intermediate compounds represented as formula (I) useful for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof are disclosed. ##STR1## wherein R is tetrahydropyranyl, tetrahydrofuranyl, 2-ethoxyethyl, t-butyldimethylsilyl, triisopropylsilyl or triethylsilyl group; R.sup.1 and R.sup.2 are independently hydrogen or ester-forming group; P is hydrogen, trimethylsilyl or tri-n-butyltin; and wavy line means epi-stereoisomeric mixture.
Claims2
A compound represented as formula I:
- ##STR7## wherein R is tetrahydropyranyl, tetrahydrofuranyl, 2-ethoxyethyl t-butyldimethylsilyl, triisopropylsilyl or triethylsilyl group;
- R.sup.1 and R.sup.2 are independently hydrogen or an acetyl group;
- P is hydrogen, trimethylsilyl or tri-n-butylin;
- and the wavy line indicates an epi-stereoisomeric mixture.
1 more element
Dependencies are inferred from the claim text.