Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003923401> ?p ?o ?g. }
Showing items 1 to 51 of
51
with 100 items per page.
- W2003923401 endingPage "3835" @default.
- W2003923401 startingPage "3831" @default.
- W2003923401 abstract "Catalytic hydrogenation of 19-norabieta-4(18),8,11,13-tetraen-3α-ol over Raney Ni and subsequent dehydration afforded 18-norabieta-2,8,11,13-tetraene, which was converted into 3α-bromo-18-norabieta-8,11,13-trien-2-one (8) via a bromohydrin. Acetalization of 8 with 1,2-ethanediol in the presence of p-toluenesulfonic acid afforded a mixture of 3α-bromo-2,2-ethylenedioxy-18-norabieta-8,11,13-triene (10) and its 3β-bromo isomer (11) in a ratio of ca. 2 : 3. Oxidation of 10 and 11 with chromium trioxide in acetic acid gave the corresponding ketones 12 and 13. The ketone 13 was then converted into a diosphenol derivative, 3β-bromo-2,2-ethylenedioxy-6-hydroxy-18-norabieta-5,8,11,13-tetraen-7-one (14), by treatment with oxygen in the presence of potassium t-butoxide. Hydrolysis of 14 with dilute hydrochloric acid followed by dehydrobromination afforded the desired analog, 6-hydroxy-19-norabieta-3,5,8,11,13-pentaene-2,7-dione. A related A/B ring oxygenated compound, 19-norabieta-3,5,8,11,13-pentaene-2,7-dione was ..." @default.
- W2003923401 created "2016-06-24" @default.
- W2003923401 creator A5002201813 @default.
- W2003923401 creator A5020218396 @default.
- W2003923401 creator A5079422579 @default.
- W2003923401 date "1982-12-01" @default.
- W2003923401 modified "2023-09-27" @default.
- W2003923401 title "Synthesis of A and B Rings Analog of Coleon B" @default.
- W2003923401 cites W1990134591 @default.
- W2003923401 cites W2017058820 @default.
- W2003923401 cites W2043303982 @default.
- W2003923401 cites W2057639901 @default.
- W2003923401 cites W2081555201 @default.
- W2003923401 cites W2082195872 @default.
- W2003923401 cites W2315009020 @default.
- W2003923401 cites W2335259137 @default.
- W2003923401 doi "https://doi.org/10.1246/bcsj.55.3831" @default.
- W2003923401 hasPublicationYear "1982" @default.
- W2003923401 type Work @default.
- W2003923401 sameAs 2003923401 @default.
- W2003923401 citedByCount "2" @default.
- W2003923401 crossrefType "journal-article" @default.
- W2003923401 hasAuthorship W2003923401A5002201813 @default.
- W2003923401 hasAuthorship W2003923401A5020218396 @default.
- W2003923401 hasAuthorship W2003923401A5079422579 @default.
- W2003923401 hasBestOaLocation W20039234011 @default.
- W2003923401 hasConcept C185592680 @default.
- W2003923401 hasConcept C71240020 @default.
- W2003923401 hasConceptScore W2003923401C185592680 @default.
- W2003923401 hasConceptScore W2003923401C71240020 @default.
- W2003923401 hasIssue "12" @default.
- W2003923401 hasLocation W20039234011 @default.
- W2003923401 hasOpenAccess W2003923401 @default.
- W2003923401 hasPrimaryLocation W20039234011 @default.
- W2003923401 hasRelatedWork W1531601525 @default.
- W2003923401 hasRelatedWork W1970974546 @default.
- W2003923401 hasRelatedWork W1990781990 @default.
- W2003923401 hasRelatedWork W1996140555 @default.
- W2003923401 hasRelatedWork W2606230654 @default.
- W2003923401 hasRelatedWork W2607424097 @default.
- W2003923401 hasRelatedWork W2748952813 @default.
- W2003923401 hasRelatedWork W2899084033 @default.
- W2003923401 hasRelatedWork W2948807893 @default.
- W2003923401 hasRelatedWork W2778153218 @default.
- W2003923401 hasVolume "55" @default.
- W2003923401 isParatext "false" @default.
- W2003923401 isRetracted "false" @default.
- W2003923401 magId "2003923401" @default.
- W2003923401 workType "article" @default.