Studies on the structure–activity relationship of 1,3,3,4-tetra-substituted pyrrolidine embodied CCR5 receptor antagonists. Part 2: Discovery of highly potent anti-HIV agents
摘要:
Modification of 1,3,3,4-tetra-substituted pyrrolidine embodied CCR5 receptor antagonists revealed that introducing a fluoro group at the 3-position of the 3-phenyl group to reduce metabolism did not adversely affect the high potency against HIV infection, and that replacing the piperidine ring with a tropane ring could deliver the most potent anti-HIV agents. Stereochemistry of the substituted tropane ring is essential for maintaining the potent anti-HIV activity because only exo-isomers displayed subnanomolar whole cell activity. (C) 2010 Elsevier Ltd. All rights reserved.
A Facile One-Pot Transformation of Baylis-Hillman Adducts into Unsymmetrical Disubstituted Maleimide and Maleic Anhydride Frameworks: A Facile Synthesis of Himanimide A
Unsymmetrical, disubstitutedmaleimide and maleicanhydrideframeworks have been accessed from Baylis–Hillmanadducts in an operationally simple three‐step (Friedel–Crafts reaction, selective hydrolysis, and cyclization), one‐pot strategy. This strategy has been successfully extended to the synthesis of a representative bioactive compound, himanimide A (see scheme).