187083-96-1Relevant academic research and scientific papers
Enantioselective Synthesis of Chiral Carboxylic Acids from Alkynes and Formic Acid by Nickel-Catalyzed Cascade Reactions: Facile Synthesis of Profens
Fu, Kaiyue,Ma, Yu,Sun, Yaxin,Tang, Bo,Yang, Guang,Yang, Peng,Yue, Jieyu,Zhang, Li,Zhou, Jianrong Steve
supporting information, (2021/11/22)
We report a stereoselective conversion of terminal alkynes to α-chiral carboxylic acids using a nickel-catalyzed domino hydrocarboxylation-transfer hydrogenation reaction. A simple nickel/BenzP* catalyst displayed high activity in both steps of regioselective hydrocarboxylation of alkynes and subsequent asymmetric transfer hydrogenation. The reaction was successfully applied in enantioselective preparation of three nonsteroidal anti-inflammatory profens (>90 % ees) and the chiral fragment of AZD2716.
Side chain methyl analogues of Δ8-THC
Huffman, John W.,Lainton, Julia A.H.,Banner, W. Kenneth,Duncan Jr., Sammy G.,Jordan, Robert D.,Yu, Shu,Dai, Dong,Martin, Billy R.,Wiley, Jenny L.,Compton, David R.
, p. 1557 - 1576 (2007/10/03)
The synthesis of both side chain epimers of 1'- (4), 2'- (5), 3'-methyl- (6) and 4'-methyl-Δ8-tetrahydrocannobinol (7) has been carried out. The synthetic approach entailed the acid catalyzed condensation of the appropriate substituted resorcinol with menthadienol to provide the Δ8-THC analogue. Both isomers of 1'- (4) and 2'-Δ8-THC (5) were more potent than Δ8-THC, both in vitro and in vivo. The 3'-methyl isomers (6) were approximately equal in potency to Δ8-THC, and 4'-methyl-Δ8-THC was less potent. There was relatively little difference in potency between the epimers of 4, 5, and 6.
