Heterocyclic compounds, characterized by cyclic structures containing one or more heteroatoms such as nitrogen, oxygen, or sulfur, constitute the most diverse and essential class of organic molecules in drug discovery. These structures are not merely passive frameworks; they serve as critical pharmacophores that facilitate specific interactions with biological targets, including enzymes, receptors, and nucleic acids. … Read more
Naphthalene (C₁₀H₈)Bicyclic Aromatic (Fused Benzene Rings) Important Derivatives: Naphthalene sulfonates, α-Naphthol, β-Naphthol, Naphthoquinones Anthracene (C₁₄H₁₀) Linearly Fused Tricyclic Aromatic Important Derivatives: Anthraquinone, Hydroxyanthraquinones (e.g., Emodin, Chrysophanol), Danthron, Senna glycosides Phenanthrene (C₁₄H₁₀) Angularly Fused Tricyclic Aromatic Important Derivatives: Morphine, Codeine, Thebaine, Hydromorphone, Oxycodone (all phenanthrene alkaloids) Diphenylmethane ( C₁₃H₁₂ ) Non-Fused Aromatic (Two Benzene rings linked … Read more