Detail of "2725-91-9"

CAS Number:
2725-91-9
Name:
5,9b-Etheno-10,11c-(iminoethano)chryseno[4,5-bcd]furan-6,9-diol,4a,5,10,11-tetrahydro-3,5-dimethoxy-14-methyl-, (4aR,5R,9bR,10R,11cS)-
Molecular Structure:
Formula:
C25H25 N O5
Synonyms:
Benz[7,8]-6,14-ethenomorphinan-3',6'-diol,4,5-epoxy-3,6-dimethoxy-17-methyl-, (5a)- (9CI); Thebainehydroquinone (6CI,7CI,8CI); Thebainhydrochinon

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Studies into the Diels-Alder reactions of 5-trimethylsilylthebaine: Studies into the Diels-Alder reactions of 5-trimethylsilylthebaine.In this study， 2725-91-9 and 504423-64-7 are also used. Chen, Weibin; Strahan, Gary D.; Parrish, Damon A.; Deschamps, Jeffrey R.; Coop, Andrew (Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201, USA). Tetrahedron Letters, Volume Date 2005, 46(1), 131-133 (English) 2004 Elsevier B.V. CODEN: TELEAY. ISSN: 0040-4039. DOCUMENT TYPE: Journal CA Section: 31 (Alkaloids) Section cross-reference(s): 27 The introduction of a 5-trimethylsilyl group on the least hindered face of the diene thebaine was anticipated to favor attack by dienophiles from the alternate face, but only gave rise to a rearrangement product I when treated with 3-butene-2-one at 110 °C. Reaction with the more reactive benzoquinone at lower temp. gave rise to a very slow reaction from the same face as the silyl group to produce II, indicating that a trimethylsilyl group does not sufficiently hinder this face to achieve reaction at the other face. .