Given its manifold potential therapeutic applications and amenability to modification, noscapine is a veritable “Renaissance drug” worthy of commemoration. Perhaps the only facet of noscapine’s profile more astounding than its versatility is its virtual lack of side effects and addictive properties, which distinguishes it from other denizens of Papaver somniferum. This review intimately chronicles the rich intellectual and pharmacological history behind the noscapine family of compounds, the length of whose arms was revealed over decades of patient scholarship and experimentation. We discuss the intriguing story of this family of nontoxic alkaloids, from noscapine’s purification from opium at the turn of the 19th century in Paris to the recent torrent of rationally designed analogs with tremendous anticancer potential. In between, noscapine’s unique pharmacology; impact on cellular signaling pathways, the mitotic spindle, and centrosome clustering; use as an antimalarial drug and cough suppressant; and exceptional potential as a treatment for polycystic ovarian syndrome, strokes, and diverse malignancies are catalogued. Seminal experiments involving some of its more promising analogs, such as amino-noscapine, 9-nitronoscapine, 9-bromonoscapine, and reduced bromonoscapine, are also detailed. Finally, the bright future of these oftentimes even more exceptional derivatives is described, rounding out a portrait of a truly remarkable family of compounds.

/pdf/the-noscapine-chronicle-a-pharmaco-historic-biography-of-the-4v803h02sy.pdf

The Noscapine Chronicle: A Pharmaco-Historic Biography of the Opiate Alkaloid Family and its Clinical Applications.

Many nitrogen-moiety containing alkaloids derived from plant origins are bioactive and play a significant role in human health and emerging medicine. Noscapine, a phthalideisoquinoline alkaloid derived from Papaver somniferum, has been used as a cough suppressant since the mid 1950s, illustrating a good safety profile. Noscapine has since been discovered to arrest cells at mitosis, albeit with moderately weak activity. Immunofluorescence staining of microtubules after 24 h of noscapine exposure at 20 μM elucidated chromosomal abnormalities and the inability of chromosomes to complete congression to the equatorial plane for proper mitotic separation (Proc. Natl. Acad. Sci. U. S. A. 1998, 95, 1601−1606 ). A number of noscapine analogues possessing various modifications have been described within the literature and have shown significantly improved antiprolific profiles for a large variety of cancer cell lines. Several semisynthetic antimitotic alkaloids are emerging as possible candidates as novel anticance...

Progress toward the development of noscapine and derivatives as anticancer agents

Noscapine chemosensitization enhances docetaxel anticancer activity and nanocarrier uptake in triple negative breast cancer

Noscapine, a phthalide isoquinoline alkaloid isolated from the opium poppy Papaver somniferum, is traditionally being used as an anticough drug. With a safe in vitro toxicological profile, noscapin...

Imidazo[2,1-b]thiazole-Coupled Natural Noscapine Derivatives as Anticancer Agents.

Synthesis and biological evaluation of novel biaryl type α-noscapine congeners

Noscapine, a phthalideisoquinoline alkaloid derived from Papaver somniferum, is a well-known antitussive drug that has a relatively safe in vitro toxicity profile. Noscapine is also known to possess weak anticancer efficacy, and since its discovery, efforts have been made to design derivatives with improved potency. Herein, the synthesis of a series of noscapine analogues, which have been modified in the 6', 9', 1 and 7-positions, is described. In a previous study, replacement of the naturally occurring N-methyl group in the 6'-position with an N-ethylaminocarbonyl was shown to promote cell-cycle arrest and cytotoxicity against three cancer cell lines. Here, this modification has been combined with other structural changes that have previously been shown to improve anticancer activity, namely halo substitution in the 9'-position, regioselective O-demethylation to reveal a free phenol in the 7-position, and reduction of the lactone to the corresponding cyclic ether in the 1-position. The incorporation of new aryl substituents in the 9'-position was also investigated. The study identified interesting new compounds able to induce G2/M cell-cycle arrest and that possess cytotoxic activity against the human prostate carcinoma cell line PC3, the human breast adenocarcinoma cell line MCF-7, and the human pancreatic epithelioid carcinoma cell line PANC-1. In particular, the ethyl urea cyclic ether noscapinoids and a compound containing a 6'-ethylaminocarbonyl along with 9'-chloro, 7-hydroxy and lactone moieties exhibited the most promising biological activities, with EC50 values in the low micromolar range against all three cancer cell lines, and these derivatives warrant further investigation.

The synthesis and biological evaluation of multifunctionalised derivatives of noscapine as cytotoxic agents.

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The synthesis and biological evaluation of multifunctionalised derivatives of noscapine as cytotoxic agents.