Intermediates for benzopyran prostaglandin derivatives

Details Intermediates for benzopyran prostaglandin derivatives Intermediates for benzopyran prostaglandin derivatives

C - Chemistry, Metallurgy

07

D

260/356

C07D 311/94 (2006.01)

Patent

CA 1215994

ABSTRACT Intermediate compounds for preparing benzo- pyran prostaglandin derivatives of general formula: Image (XIII) or Image (XIX) wherein Y is -CH2CH2, cis-CH=CH-, trans-CH=CH- or -C?C-; R1 is =O, H:H, .alpha.-OR12:.beta.-H, .alpha.-H:.beta.-OR12, .alpha.-CH2OR12:.beta.-H or .alpha.-H:.beta.-CH2OR12, wherein R12 is H or an -OH-protecting group; M is .alpha.-OR12:.beta.-R14 or .alpha.-R14:.beta.-OR12, wherein R12 is as defined above and R14 is H or -CH3; L1 is .alpha.-R15:.beta.-R16, .alpha.-R16:.beta.-R15 or a mixture thereof, wherein R15 and R16, independently, are H, F or -CH3, with the proviso that one of R15 and R16 is F only when the other is not -CH3; R17 is Image ; Image , when taken together, is (i) Image , (ii) -C?CCqH2qCH3, wherein q is an integer of from 2 to 6, or (iii) -CpH2pCH=CH2, wherein p is an integer of from 3 to 7; and R33 is -CHO or -CH2OR12, wherein R12 is as defined above.

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