MEDICINAL CHEMISTRY
MEDICINAL CHEMISTRY
MEDICINAL CHEMISTRY
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2 (d)<br />
4.<br />
H 3C<br />
H 3C<br />
HO<br />
CH-CH 2-O-CH 2-CH-CH 2-N<br />
OH<br />
N<br />
N<br />
N<br />
Bepridil (19)<br />
N<br />
N<br />
N<br />
N<br />
N<br />
N<br />
OH<br />
Dypyridamole (20)<br />
H 3CO<br />
H 3CO<br />
OH<br />
Papaverine (22)<br />
Chemistry: preparation of Dypyridamole:<br />
Synthesis of Dypyridamole (20)<br />
HO<br />
N<br />
HO<br />
OH<br />
N<br />
(23)<br />
OH<br />
N<br />
OH<br />
N<br />
N<br />
N<br />
OH<br />
PCl 5/POCl 3<br />
N<br />
N<br />
N<br />
N<br />
N<br />
N<br />
Cl<br />
N<br />
N<br />
N<br />
N<br />
Cl<br />
N<br />
(24)<br />
N<br />
N<br />
HN<br />
N<br />
N<br />
OCH 3<br />
OCH 3<br />
N<br />
Cl<br />
N<br />
HN CH 2CH 2OH<br />
CH 2CH 2OH<br />
N<br />
N<br />
Dypyridamole (20)<br />
OH<br />
(25)<br />
OH<br />
OH<br />
O<br />
O<br />
Cyclandelate (21)<br />
Cl