70509-92-1

Usage

Chemical Properties

Beige Solid

Upstream product

• 108-24-7 acetic anhydride 
• 76-42-6 Oxycodone 
• 508-54-3 14-hydroxycodeinone 
• 115-37-7 thebaine 

Downstream Products

• 76-41-5 oxymorphone 
• 70866-63-6 C₁₉H₂₁NO₅*ClH 
• 57664-96-7 noroxycodone 
• 16617-07-5 naltrexone methyl ether 
• 38211-20-0 4,5α-epoxy-3-methoxy-17-methyl-6α-(toluene-4-sulfonyloxy)-morphinan-14-ol 
• 107277-81-6 14-acetoxy-4,5α-epoxy-3-methoxy-17-methyl-6α-(toluene-4-sulfonyloxy)-morphinane 
• 16590-41-3 Naltrexone 
• 357-08-4 naloxone hydrochloride 

Relevant academic research and scientific papers

PROCESSES FOR PREPARING NOR-OPIOID COMPOUNDS AND OPIOID ANTAGONISTS BY ELECTROCHEMICAL N-DEMETHYLATION

The present invention relates to a process for preparing a nor-opioid compound wherein an opioid precursor compound is electrochemically N-demethylated. The present invention further relates to a process for preparing an opioid antagonist compound, wherein an opioid precursor compound is electrochemically N-demethylated and the thus obtained nor-opioid compound is alkylated again at its secondary amine functional group.

Electrochemical N-Demethylation of 14-Hydroxy Morphinans: Sustainable Access to Opioid Antagonists

The most challenging step in the preparation of many opioid antagonists is the selective N-demethylation of a 14-hydroxymorphinan precursor. This process is carried out on a large scale using stoichiometric amounts of hazardous chemicals like cyanogen bromide or chloroformates. We have developed a mild reagent- and catalyst-free procedure for the N-demethylation step based on the anodic oxidation of the tertiary amine. The ensuing intermediates can be readily hydrolyzed to the target nor-opioids in very good yields.

Method for synthesis of naloxone hydrochloride

The invention belongs to the technical field of medicament synthesis, and relates to a synthetic method of naloxone hydrochloride. The method comprises the following steps: by adopting thebaine as a starting material, oxidizing and then reducing thebaine to obtain a compound 2, reacting the compound 2 with acetic anhydride to obtain an ester compound 3, then removing methyl and performing hydrolysis to obtain a compound 4, reacting the compound 4 with an alkylating reagent (such as the reagent selected from chloropropene, bromopropene, iodopropylene or the combination thereof), performing allylation on the Nth bit of a mother nucleus structure to obtain a compound 5, then removing methyl to obtain naloxone free alkali, then forming acid addition salts with hydrochloric acid, and then refining to obtain naloxone hydrochloride which can be used as a medicinal raw material medicament. By adopting the method disclosed by the invention, a high-quality medicinal raw material medicament can be prepared.

Investigation of structure, vibrational and NMR spectra of oxycodone and naltrexone: A combined experimental and theoretical study

In this work, two important opioid antagonists, naltrexone and oxycodone, were prepared from thebaine and were characterized by IR, 1H NMR and 13C NMR spectroscopy. Moreover, computational NMR and IR parameters were obtained using density functional theory (DFT) at B3LYP/6-311++G* * level of theory. Complete NMR and vibrational assignment were carried out using the observed and calculated spectra. The IR frequencies and NMR chemical shifts, determined experimentally, were compared with those obtained theoretically from DFT calculations, showed good agreements. The RMS errors observed between experimental and calculated data for the IR absorptions are 85 and 105 cm-1, for the 1H NMR peaks are 0.87 and 0.17 ppm and for those of 13C NMR are 5.6 and 5.3 ppm, respectively for naltrexone and oxycodone.

N-Cubylmethyl substituted morphinoids as novel narcotic antagonists

N-Cubylmethylnormorphine (1) and N-cubylmethylnoroxymorphone (2) have been synthesized and found to be more potent ligands at the μ and κ opioid receptors than morphine and oxymorphone respectively. In the guinea-pig ileum preparation, compounds 1 and 2 were characterized as opioid μ antagonists (Ke=68 and 16 nM, respectively). Compound 2 also showed effective κ-antagonism (Ke=22 nM). The narcotic antagonism activity of 1 has been confirmed by in vivo assays.

A New Reagent for the Selective, High-Yield N-Dealkylation of Tertiary Amines: Improved Syntheses of Naltrexone and Nalbuphine

Secondary amine hydrochlorides are obtained in high yield by reaction of tertiary amines with α-chloroethyl chloroformate followed by warming the intermediate carbamate in methanol.

N-dealkylation of N-alkyl-14-hydroxymorphinans and derivatives thereof

There is provided a novel, high yield, method of dealkylating N-alkylated 14-hydroxymorphinans and derivatives thereof including, inter alia, oxymorphone and oycodone. There are thus provided, inter alia, more efficient routes for the formation of naloxone, naltrexone, and nalbuphine. In the principal step of the process, the dealkylation using certain oxycarbonyl halides (or haloformates) is carried out on the N-alkyl-14-acyloxy-morphinan which it is desired to dealkylate.