50873-93-3Relevant articles and documents
Synthesis and pharmacological evaluation of benzamide derivatives as selective 5-HT4 receptor agonists
Sonda, Shuji,Kawahara, Toshio,Katayama, Kenichi,Sato, Noriko,Asano, Kiyoshi
, p. 3295 - 3308 (2007/10/03)
It is thought that selective 5-HT4 receptor agonists-such as 4-amino-5-chloro-2-methoxy-N-[1-(6-oxo-6-phenylhexyl)piperidin-4-ylmethyl] benzamide (2)-have the ability to enhance both upper and lower gastrointestinal motility without any significant adverse effects. Modification of 2 was performed. Variation of the piperidin-4-ylmethyl moiety of 2 led to a decrease in the binding affinity for the 5-HT4 receptor. Following conversion of the carbonyl group on the benzoyl part to a hydroxyl or sulfoxide group, the binding affinity for the 5-HT4 receptor was retained although the effect on defecation was reduced. Many of the 4-amino-5-chloro-2-methoxy-N- (piperidin-4-ylmethyl)benzamides that had a ether or sulfide moiety in the side-chain part at the 1-position of the piperidine exhibited high affinity for the 5-HT4 receptor. Among these, phenylthio 41c and benzylthio derivative 44 were selective 5-HT4 receptor agonists, and had a similar effect on defecation to compound 2.
Enantioselective Addition of Diethylzinc to Aldehydes using Chiral Polymer Catalysts Possessing a Methylene Spacer
Watanabe, Masami,Soai, Kenso
, p. 837 - 842 (2007/10/02)
N-Butylnorephedrine supported on polystyrene resin via a six-methylene spacer catalyses the enantioselective addition of diethylzinc to both aromatic and aliphatic aldehydes, providing optically active secondary alcohols in good to high enantiomeric excesses.In the enantioselective addition of diethylzinc to an aliphatic aldehyde, polymer catalyst with a six-methylene spacer is more enantioselective than other previously reported polymer catalysts.
The in-bicyclo[4.4.4]-1-tetradecyl cation: A stable substance with a three-center, two electron C-H-C bond
McMurry,Lectka,Hodge
, p. 8867 - 8872 (2007/10/02)
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