Synthese von 18‐Carboxy‐steroiden. Über Steroide, 146. Mitteilung
Synthese von 18‐Carboxy‐steroiden. Über Steroide, 146. Mitteilung
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合成 18-羧基-类固醇,146。Mitteilung。
DOI:
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发表时间:
1957
期刊:
影响因子:
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通讯作者:
A. Wettstein
中科院分区:
文献类型:
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作者:
K. Heusler;H. Ueberwasser;P. Wieland;A. Wettstein
A number of intermediates for a synthesis of aldosterone have been prepared from the known d,l-δ8a-1-oxo-4β-hydroxy-4bβ-methyl-7-ethylenedioxy-4aα, 10aβ-dodecahydro-phenanthrene (I). A new asymmetric center at position 2 has been introduced in a fully stereospecific manner by dialkylation with allyl iodide, oxidative degradation of the allylgroups, and lactolization or lactonization of the β-orientated 2-acetaldehyde or 2-acetic acid residue respectively, with the 4β-hydroxy-group. Derivatives suitable for the construction of ring D have been obtained by introduction of an acetic acid residue in 1-position of the tricyclic compounds.