Olefin Metathesis: Remote Substituents Governing the Stereoselectivity of 11-Membered-Ring Formation
摘要:
[GRAPHICS]Stereospecific RCM reaction of 7 (R-1 = Me) results in the formation of (Z)-11-membered macrocycle 9c. Cascade RCM/ROM/RCM transformation of 7 (R-1 = H) affords the thermodynamically more stable spirocycle product 12.
Olefin Metathesis: Remote Substituents Governing the Stereoselectivity of 11-Membered-Ring Formation
摘要:
[GRAPHICS]Stereospecific RCM reaction of 7 (R-1 = Me) results in the formation of (Z)-11-membered macrocycle 9c. Cascade RCM/ROM/RCM transformation of 7 (R-1 = H) affords the thermodynamically more stable spirocycle product 12.
Novel tetrahydropyrazolo-[3,4-b]quinolinones, cyclo- benta[b]pyrazolo-[4,3-e]pyridinones and cyclohepta[b]-pyraz- olo-[4,3-e]pyridinones are disclosed useful as anxiolytics hav- ng reduced side effects are disclosed, including methods of preparation, pharmaceutical compositions containing them and intermediates used in their preparation.
[GRAPHICS]Stereospecific RCM reaction of 7 (R-1 = Me) results in the formation of (Z)-11-membered macrocycle 9c. Cascade RCM/ROM/RCM transformation of 7 (R-1 = H) affords the thermodynamically more stable spirocycle product 12.