93189-18-5Relevant articles and documents
The development of a short route to the API ropinirole hydrochloride
Yousuf, Zeshan,Richards, Andrew K.,Dwyer, Andrew N.,Linclau, Bruno,Harrowven, David C.
, p. 10532 - 10539 (2015/11/10)
A four-step, three-stage synthesis of the API ropinirole hydrochloride has been developed from a commercially available naphthalene derivative. The new route has half the step-count and twice the overall yield of the current manufacturing process. Key features of the synthesis are a regioselective Birch reduction and an ozonolysis with concomitant ring closure to induce the required ring contraction.
Synthesis of HKI 0231B
Scopton, Alex,Kelly, T. Ross
, p. 10004 - 10012 (2007/10/03)
The total synthesis of HKI 0231B (1b) was completed in 12 linear steps and 15.6% overall yield. An unusual anionic cyclization provided access to intermediate 61 and the embedded benz[cd]-indol-3-(1H)-one ring system 3. Directed ortho-lithiation in the presence of a ketone followed by formylation and finally acid-catalyzed methanolysis complete the synthesis. Studies directed toward the construction and reactivity of the lactam acetal functionality present in HKI 0231A (1a) are also reported.
Characterization of the 5-HT7 Receptor. Determination of the Pharmacophore for 5-HT7 Receptor Agonism and CoMFA-Based Modeling of the Agonist Binding Site
Vermeulen, Erik S.,Schmidt, Anne W.,Sprouse, Jeffrey S.,Wikstr?m, H?kan V.,Grol, Cor J.
, p. 5365 - 5374 (2007/10/03)
On the basis of a set of 20 diverse 5-HT7 receptor agonists, the pharmacophore for 5-HT7 receptor agonism was determined. Additionally two CoMFA models were developed, based on different alignments of the agonists. Both models show good correlations between experimental and predictive pKi values and show a high degree of similarity. The CoMFA fields were subsequently used to map the agonist binding site of the model of the 5-HT7 receptor. Important roles in ligand binding are attributed to Asp162 of TM3 (interaction with a protonated nitrogen), and Thr244 of TM5 (interaction with a substituent at an aromatic moiety). Amino acid residues of the aromatic cluster of TM6 are hypothesized to play an important role in ligand binding as π-π stacking moieties. Agonists missing a hydrogen-bond-accepting moiety, but possessing an aromatic substituent instead, seem to bind the receptor with high affinity as well by occupying a lipophilic pocket hosted by residues of TM5 and TM6.
