H1-antagonists:
by H1-antagonists, also known as H1 receptor antagonists or antihistamines, are a class of drugs that block the action of histamine at the H1 receptors. The …
Category: SEM V
CLASSIFICATION OF ANTIHISTAMINES DRUGS
1. H1-Antagonists with classical structures According to the chemical features, they are further classified as follows: a. Ethylene diamine derivatives b. Amino alkyl ether analogues …
STRUCTURE-ACTIVITY RELATIONSHIP – H1 RECEPTOR ANTAGONISTS
The structure-activity relationship (SAR) for H1 receptor antagonists, commonly known as antihistamines, involves understanding how the chemical structure of a compound influences its pharmacological activity …
ANTIHISTAMINES
INTRODUCTION Histamine, [2-(imidazol-4-y1) ethylamine], which is biosynthesized by decarboxylation of the essential amino acid histidine, is found in all organs and tissues of the human …