Browsing by Subject "betulin"

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3,28-Diacetoxylup-20(29)-ene-30-oic Acid and Its ω-Bromoalkyl Esters

Ponomaryov D.V.; Grigorʼeva L.R.; Nemtarev A.V.; Tsepaeva O.V.; Mironov V.F.; Gnezdilov O.I.; Antipin I.S. (2020)

© 2020, Pleiades Publishing, Ltd. Abstract: A convenient procedure has been developed for the synthesis of3β,28-diacetoxylup-20(29)-en-30-oic acid via oxidation of 3β,28-di-O-acetylbetulin with selenium dioxide in ...
Reaction of Methyl (2-Methylidene)-3-oxolup-20(29)-en-28-oate with Dimethyl Trimethylsilyl Phosphite

Tsepaeva O.; Nemtarev A.; Abdullin T.; Kuznetsova E.; Mironov V. (2018)

© 2018, Pleiades Publishing, Ltd. A method of phosphorylation of pentacyclic triterpenoids derivatives containing an α,β-unsaturated carbonyl fragment in the ring A was described by the example of the reaction of methyl ...
Synthesis of C-29-phosphonium derivatives of 3,28-diacetoxylup-20(29)-en-30-oic acid

Ponomaryov D.V.; Grigor´eva L.R.; Nemtarev A.V.; Tsepaeva O.V.; Mironov V.F.; Antipin I.S. (2020)

© 2020, Springer Science+Business Media LLC. 3β,28-Diacetoxylup-20(29)-en-30-oic acid (obtained via oxidation of betulin diacetate) enters the addition reaction with P—H-phosphonium salts (triarylphosphonium trifluoroacetates) ...

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