15358-22-2Relevant articles and documents
Perchloric acid induced epimerisation of the thevinones: An improved synthesis of 7β-dihydrothevinones
Derrick,Coop,Al-Mousawi,Husbands,Lewis
, p. 7571 - 7576 (2000)
The region above and away from C7 in the orvinols is known to be of particular importance in determining the μ-opioid receptor profile of this important class of opioids. However it has been difficult to explore this site due to the relative inaccessibility of 7β-substituted compounds. Here we report that perchloric acid induced epimerisation of the 7α-ketones (dihydrothevinones) allows considerably improved access to a series of β-ketones (β-dihydrothevinones). The extent of epimerisation of the 7α-ketone is determined by the degree of steric bulk in both the 6,14-bridge and in the ketone side chain. (C) 2000 Elsevier Science Ltd.
The [4 + 2] Addition of Singlet Oxygen to Thebaine: New Access to Highly Functionalized Morphine Derivatives via Opioid Endoperoxides
Lopez, Dolores,Quinoa, Emilio,Riguera, Ricardo
, p. 4671 - 4678 (2000)
The photooxidation of thebaine (3) with a sun lamp affords two main products: hydrodibenzofuran 10 (major) and benzofuran 11 (minor). The latter compound becomes predominant if a Hg lamp is used instead of a sun lamp. The formation of 10 proceeds via an endoperoxide intermediate that undergoes oxidation at the nitrogen atom. Protection of the nitrogen either by protonation or quaternization prevents its oxidation and thus the photooxidation of 3 in acid media constitutes a one-pot procedure for the preparation of 14-hydroxycodeinone 35. Photooxidation of the thebaine ammonium salt 31 allows the isolation in good yields of the corresponding to thebaine endoperoxide 32. The selective protection and reduction of the keto, aldehyde, and olefinic groups of hydrodibenzofuran 10 allowed the preparation of several diol and keto alcohol derivatives. This is the first report on the use of photooxidation to functionalize thebaine at C(6) and C(14) and also the first on the isolation of opioid endoperoxides.
DEUTERATED COMPOUND AND MEDICAL USE THEREOF
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Paragraph 0017, (2020/01/12)
The present invention relates to a compound represented by formula I and a non-toxic pharmaceutically acceptable salt thereof. In formula (I), R1 is H, CH3 or deuterated methyl (CD3); R2 is CH3 or CH2CH3; R3, R4 and R5 are each independently H or deuterium (D); when R1 is H or CH3, at least one of R3, R4 and R5 is D.
PROCESS FOR THE PREPARATION OF (S)-2-((4R,4AS, 6R,7AR,12BS)-7,9-DIMETHOXY-1,2,3,4,5,6,7,7A-OCTAHYDRO-4A,7-ETHANO-4, 12-METHANOBENZOFURO[3,2-E] ISOQUINOLIN-6-YL)-3,3-DIMETHYLBUTAN-2-OL
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Paragraph 00142-00147, (2017/05/02)
An invention includes a process for the preparation of (S)-2((4R,4aS,6R,7R,7aR,12bS)-7,9-dimethoxy-1,2,3,4,5,6,7,7a-octahydro-4a,7-ethano-4,12-methanobenzofuro[3,2-e]isoquinolin-6-yl)-3,3-dimethylbutan-2-ol.
