1937
DOI: 10.1002/cber.19370700133
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Versuche zur Synthese natürlicher Sterine, II. Mitteil.: Synthese des 1‐Keto‐2‐methyl‐7‐oxy‐1.2.3.4‐tetrahydro‐phenanthrens

Abstract: Tn \f'eiterverfolgung des in der 1 Mitteilung l) erorterten Zielei liahen 1111 nun auch dcls 1 -Ketci-Z-irieth> 1-5 0x3-1 2 3 4 -t e t r a h~ dro-plien a n t hren (VI) synthetiscli aufgehaut Gegenuher den 18 C-Atomen de5 ~~etli~l-cyclopeiitaIlo-plienanthren-Skeletts enthalt dieses Oxyketon bereiti 15 C-Atoine in derselhen raunilichen 1,age nrie das Equilenin Dennoell teigte es iin physiologischen \'erstich n eder estrusnocli Hahnerikamm-~~irkung Zu seiner Synthese haberi 11 ir den fruher bescliriebenen Weg b e… Show more

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Cited by 6 publications
(8 citation statements)
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“…Darzens cyclization, hydrogénation, and demethylation then led to dZ-equilenin (23). The unsaturated acid 47 was also obtained by Haberland [24][25][26][27][28] as well as by Bachmann [12]. However, the products obtained by Johnson [21] had different melting points from those described by Haberland.…”
Section: Johnsons Second Synthesismentioning
confidence: 85%
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“…Darzens cyclization, hydrogénation, and demethylation then led to dZ-equilenin (23). The unsaturated acid 47 was also obtained by Haberland [24][25][26][27][28] as well as by Bachmann [12]. However, the products obtained by Johnson [21] had different melting points from those described by Haberland.…”
Section: Johnsons Second Synthesismentioning
confidence: 85%
“…Resolution was easily effected via the Z-menthoxy ester according to the method of Bachmann, Cole, and Wilds [2]. Similarly, demethylation of cZZ-isoequilenin methyl ether (36) led to dZ-isoequilenin (24). The overall yield of cZZ-equilenin (23) from the tricyclic ketone 4 in eight steps was about 30%.…”
Section: 26mentioning
confidence: 99%
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“…Anal. (C2oHi804) C, H. 3-Methoxy-13-methylgona-l,3,5 (10),6,8,14-hexaen-16-one (5).-Starting with 2 (6.4 g) and using the procedure outlined for 3, a yield of 4.8 g (80%) of 5 was obtained, mp 203-206°( 205-206°).2c…”
Section: Experimental Section9mentioning
confidence: 99%
“…3-Methoxy-14/3-gona-l,3,5 (10),6,8-pentaen-16-one (cis Isomer) and 3-Methoxygona-l,3,5 (10),6,8-pentaen-16-one (trans Isomer) (6).-Hydrogenation of 3 in PhMe-DMA Csolution, using a Pd-C catalyst dried in refluxing PhMe produced a mixture of 6(cis and trans) separated by fractional crystallization from Me2CO to produce 6(irans): mp 155-157°; 231, 268 µ; P C=0 1739 cm-1; 6(ds), mp 138-140°; X'"'L 229, 265 µ-, p C=0 1734 cm-1. Anai.…”
Section: Experimental Section9mentioning
confidence: 99%