Structure and configuration of tavimolidin
From the roots ofPeucedanum mogoltavicum Korov. have been isolated tadzhiferin, farnesiferol B, 5-methoxy-3,4-methylenedioxypropiophenone, and a new terpenoid coumarin — tavimolidin. The structure and absolute configuration of tavimolidin have been established on the basis of a study of its chemical and spectral characteristics. The passage from tavimolidin to feselol has confirmed the structure proposed previously for mogoltavinin, mogoltavin, and mogoltin and has established their absolute configurations.
Zur Kenntnis der Sesquiterpene und Azulene. 127. Mitteilung. Über die Inhaltsstoffe der Asa foetida II. Farnesiferol B und C
Structures III and XXV have been derived on the basis of degradative work and physical evidence for Farnesiferol B and C, two isomeric C24H30O4 compounds previously isolated from Asa foetida (Umbelliferae).
Zur basenkatalysierten Spaltung von 1,5‐Dicarbonylverbindungen
Am Beispiel des Cholesten-(4)-ons-(3) wird ein neuer Abbau des Ringes A von Steroiden beschrieben. Dieser beruht auf der Anwendung einer umgekehrten Michael-Reaktion (Michael-Spaltung).