Quinine

Quinine

Source and Occurrence of Quinine Quinine is obtained from the bark of the cinchona tree (Cinchona officinalis, Cinchona bark). It is a bitter alkaloid with antimalarial properties. Isolation Extraction: Bark Processing: The bark is dried and powdered. Alkaloid Extraction: Mixed with an acidic aqueous solution (e.g., dilute HCl) to convert quinine into its water-soluble salt. … Read more

Bleomycin

Bleomycin

Bleomycin is an anti-neoplastic antibiotic used in cancers like Hodgkin’s lymphoma by inducing DNA strand breaks in cancer cells. Structure of Bleomycin It is a glycopeptide antibiotic comprising a metal-binding domain and a bithiazole ring, linked to a glycosidic sugar moiety. Chemical Formula: C₅₇H₇₉N₁₂O₂₉S₆ Mode of Action DNA Scission: Induces single and double-strand breaks in … Read more

Cisplatin

Cisplatin is an anti-neoplastic agent used in various cancers by forming DNA crosslinks, which inhibit replication and trigger cell death. Structure of Cisplatin Cisplatin is a platinum-based chemotherapeutic agent with a square planar geometry, featuring two chloride ligands and two amine groups bound to a central platinum atom. Chemical Formula: C₆H₁₈Cl₂N₄Pt Mode of Action DNA … Read more

Atropine

Atropine

Source and Occurrence of Atropine Atropine is extracted from Atropa belladonna (deadly nightshade), Datura stramonium (jimsonweed), and other Solanaceae family members. It is a tropane alkaloid with potent antimuscarinic properties. Isolation Extraction: Acid-Base Extraction: Acidic Extraction: Plant material is treated with an aqueous acid (e.g., HCl) to convert atropine into its water-soluble salt. Basification: The … Read more

Vincristine Sulphate

Vincristine Sulphate

Vincristine Sulphate is an anti-neoplastic agent used in leukemia and lymphomas by inhibiting microtubule assembly and cell division. Structure of Vincristine Sulphate Vincristine is another vinca alkaloid similar to Vinblastine, comprising the same monomers: catharanthine and vindoline, but with slight structural variations. Chemical Formula: C₂₇H₂₈N₄O₁₂ Mode of Action Microtubule Inhibition: Binds to tubulin, preventing microtubule … Read more

Vinblastine Sulphate

Vinblastine Sulphate

Vinblastine Sulphate is an anti-neoplastic alkaloid used in cancers like Hodgkin’s lymphoma by inhibiting microtubule formation and cell division. Structure of Vinblastine Sulphate Vinblastine is a vinca alkaloid comprising two monomers: catharanthine and vindoline, linked together. Chemical Formula: C₄₈H₅₈N₁₄O₁₂ Mode of Action Microtubule Inhibition: Binds to tubulin, preventing microtubule assembly and disassembly. Mitotic Arrest: Halts … Read more

Etoposide

Etoposide is an anti-neoplastic agent used in lung and testicular cancers by inhibiting topoisomerase II and causing DNA strand breaks. Structure of Etoposide Etoposide is a podophyllotoxin derivative featuring a dioxolane ring and a dihydropyran ring linked to a benzene ring. Chemical Formula: C₂₀H₁₄O₆ Mode of Action Topoisomerase II Inhibition: Prevents DNA strand re-ligation, causing … Read more

Doxorubicin

Doxorubicin

Doxorubicin is an anti-neoplastic antibiotic used in various cancers by intercalating DNA and inhibiting topoisomerase II, blocking cancer cell replication. Structure of Doxorubicin Doxorubicin, also an anthracycline antibiotic, features a tetracyclic ring structure with a daunosamine sugar moiety and a hydroxyl group. Chemical Formula: C₂₉H₂₁NO₁₄ Mode of Action DNA Intercalation: Disrupts DNA replication and transcription … Read more

Daunorubicin

Daunorubicin

Daunorubicin is an anti-neoplastic antibiotic used in leukemia treatment by intercalating DNA and inhibiting topoisomerase II activity. Structure of Daunorubicin It is an anthracycline antibiotic characterized by a tetracyclic ring structure with a daunosamine sugar moiety. Chemical Formula: C₂₄H₂₈N₂O₁₃ Mode of Action DNA Intercalation: Inserts between DNA base pairs, disrupting DNA replication and transcription. Topoisomerase … Read more

Dactinomycin

Dactinomycin

Dactinomycin is an anti-neoplastic antibiotic used to treat cancers like Wilms’ tumor and sarcomas by inhibiting DNA-dependent RNA synthesis. Structure of Dactinomycin It is also known as Actinomycin D, is a polypeptide antibiotic with a chromophore linked to two cyclic peptide components. Chemical Formula: C₂₄H₁₉N₃O₇ Mode of Action DNA Intercalation: Dactinomycin inserts itself between DNA … Read more

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