Abstract:
:The design and preparation of ortho-substituted benzofused macrocyclic lactams are described. The benzofused macrocyclic lactams were designed as neutral endopeptidase 24.11 (NEP) inhibitors. Docking studies were carried out in a model of thermolysin (TLN) using the MACROMODEL and QXP modeling programs to select suitable ring sizes. These studies predicted that the 11-, 12-, and 13-membered ring macrocyclic lactams would be active in both enzymes TLN and NEP. Good predictability of experimental results, within this series, of binding to thermolysin and to a lesser extent to NEP was observed. A visual comparison, docked at the active site of TLN, is presented for thiorphan, a 10-membered ring macrocycle and an 11-membered ring benzofused macrocyclic lactam. Potent inhibition of both NEP and thermolysin was obtained. The 11-membered ring macrocycle 25a is the most potent inhibitor from this series of compounds (TLN IC50 = 68 nM; NEP IC50 = 0.9 nM). The effects of prodrug 44b administered at 10 mg/kg po on plasma atrial natriuretic peptide (ANP) levels in conscious rats was greater than 200% over a 4 h period.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Ksander GM,de Jesus R,Yuan A,Ghai RD,Trapani A,McMartin C,Bohacek Rdoi
10.1021/jm960582osubject
Has Abstractpub_date
1997-02-14 00:00:00pages
495-505issue
4eissn
0022-2623issn
1520-4804pii
jm960582ojournal_volume
40pub_type
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