1967
DOI: 10.1021/jo01287a052
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Synthesis of 8.alpha.- and 9.beta.-B-norestrone

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Cited by 17 publications
(6 citation statements)
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References 3 publications
(11 reference statements)
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“…Condensation with methylcyclopentanedione, cyclization, catalytic hydrogénation of the 17/?-hydroxy derivative and lithium-ammonia reduction gave B-homoestradiol methyl ether (52) [78]. * The Torgov synthesis has been extended also to B-nor steroids (Scheme 4-8), beginning with the requisite indanone [79]. The allylic alcohol 53 was condensed with 2-methylcyclopentane-l,3-dione (with Triton B) Scheme 4-8 * A-homosteroids have been synthesized by ring expansion reactions with dihalocarbenes [78a].…”
Section: Homo and Nor Variationsmentioning
confidence: 99%
“…Condensation with methylcyclopentanedione, cyclization, catalytic hydrogénation of the 17/?-hydroxy derivative and lithium-ammonia reduction gave B-homoestradiol methyl ether (52) [78]. * The Torgov synthesis has been extended also to B-nor steroids (Scheme 4-8), beginning with the requisite indanone [79]. The allylic alcohol 53 was condensed with 2-methylcyclopentane-l,3-dione (with Triton B) Scheme 4-8 * A-homosteroids have been synthesized by ring expansion reactions with dihalocarbenes [78a].…”
Section: Homo and Nor Variationsmentioning
confidence: 99%
“…As part of a program of introducing chemical modifications into the steroid skeletons of estrogens Burckhalter & Sciavolino (1967) synthesized the compound 9fl-B-norestrone methyl ether, or 3-methoxy-B-nor-9fl-estra-l,3,5(10)-trien-17-one (I), hereinafter referred to as BNE. The modifications were twofold: a fiveinstead of six-membered B-ring, and a cis instead of a trans junction between the B and C rings.…”
Section: Introductionmentioning
confidence: 99%
“…p-Methoxy-propiophenon 1 reagiert mit Vinylmagnesiumbromid zum nichtkristallinen Vinylcarbinol 2, das mit Thioharnstoff in Eisessig das farblose, gut zu reinigende Thiuroniumsalz 3 liefert [17]. Setzt [23] kamen zu dem Ergebnis, daB die Hydrierung von 9p-Hydroxy-1,8-methyl-4-(p-methoxyphe-ny1)-bicyclo [ 4,3,0]nonadien-(4,6) einen cis -verknupften Bicyclus liefert. Andererseits ist bekannt, daR die katalytische Hydrierung von 17 -Hydroxy-3methoxy-ostrapentaen-[1,3,5( 10), 8,14] zum entsprechenden 801-oa stratrien mit trans-verkniipften Ringen C und D fuhrt [22].…”
unclassified
“…Man erhalt ein gelbliches 01, das nach diinnschichtrhromatographischer Analysr zu e t n a 9006 am dem Vinylcarbinol 2 besteht und sofort neit,erverarbeitet wird. 9~-Hydroxy-l~,5~-dimethyl-4~-(p-methoxyphenyl)-trans-bicyclo- [4,3,0]n o n a n 8 a a) Durch katalytische Hydrierung des Alkohols 7 a : 54,l g (0,2 Mol) 7 a schiittelt man in 325 ml Tetrahydrofuran niit 108,2 g 2proz. Palladium-Calciumcarbonat-Katalysator bis zur Siittigung in einer Wasserstoffatmosphare.…”
unclassified
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