New synthesis of diterpenoid (16S)-dihydrosteviol
RN Khaibullin, IY Strobykina, VE Kataev… - Russian Journal of …, 2009 - Springer
A new procedure has been developed for the synthesis of diterpenoid (16 S)-dihydrosteviol
[(16 S)-13-hydroxy-ent-kauran-19-oic acid] by acid hydrolysis (0.7% hydrochloric acid) of …
[(16 S)-13-hydroxy-ent-kauran-19-oic acid] by acid hydrolysis (0.7% hydrochloric acid) of …
Wagner-Meerwein rearrangement of steviol 16α, 17-and 15α, 16-epoxides
RN Khaibullin, IY Strobykina, VE Kataev… - Russian journal of …, 2010 - Springer
Abstract 16α, 17-and 15α, 16-Epoxy derivatives of diterpenoid steviol having ent-kaurane
structure were found for the first time to undergo Wagner-Meerwein rearrangement in …
structure were found for the first time to undergo Wagner-Meerwein rearrangement in …
Chemistry and Structure of Diterpenes of the Kaurene Series: I. Steviol, Isosteviol, and Isosteviol Semicarbazone
VA Al'Fonsov, GA Bakaleinik, AT Gubaidullin… - Russian journal of …, 1998 - hero.epa.gov
A convenient method for isolating isosteviol from the plant Stevia Rebaudiana Bertoni
(stevia). The major glycoside of stevia (stevioside) and its aglucone (steviol) were isolated …
(stevia). The major glycoside of stevia (stevioside) and its aglucone (steviol) were isolated …
Chemistry and structure of diterpene compounds of the kaurane series: VI. Isosteviol esters
VA Al'fonsov, OV Andreeva, GA Bakaleinik… - Russian journal of …, 2003 - Springer
Esterification with alcohols and diols of (4α, 8β, 13β)-13-methyl-16-oxo-17-norkaurane-18-
carboxylic acid chloride prepared by treatment of the acid (isosteviol) with thionyl chloride …
carboxylic acid chloride prepared by treatment of the acid (isosteviol) with thionyl chloride …
Chemistry and Structure of Diterpene Compounds of the Kaurane Series: IV. 1 Acylation of Reduction Products of the Isosteviol Keto Group
VA Al'fonsov, GA Bakaleinik, AT Gubaidullin… - Russian journal of …, 2001 - Springer
Acetylation with acetic anhydride of (4α, 8β, 13β)-16-hydroxy-13-methyl-17-norkaurane-18-
carboxylic acid and its methyl ester, obtained by reduction of isosteviol and (4α, 8β, 13β)-18 …
carboxylic acid and its methyl ester, obtained by reduction of isosteviol and (4α, 8β, 13β)-18 …
Chemistry and structure of diterpene compounds of the kaurane series: VIII. Azomethines derived from isosteviol
VA Al'fonsov, OV Andreeva, GA Bakaleinik… - Russian journal of …, 2003 - Springer
Abstract (4α, 8β, 13β)-13-Methyl-16-oxo-17-norkaurane-18-carboxylic acid (isosteviol) and
its methyl ester were reacted with benzylamine and hydroxylamine to obtain the …
its methyl ester were reacted with benzylamine and hydroxylamine to obtain the …
Chemistry and structure of diterpenoids: X. Isosteviol amides
VA Al'fonsov, VE Kataev, IY Strobykina… - Russian journal of …, 2005 - Springer
Acylation of amino alcohols with isosteviol chloride, depending on the reactant ratio, leads to
formation of either bis-isosteviol derivatives or N-acylation products. Reactions of aromatic …
formation of either bis-isosteviol derivatives or N-acylation products. Reactions of aromatic …
O-Alkylation of diterpenoid steviol in the system KOH-DMSO
RN Khaibullin, IY Strobykina, VE Kataev… - Russian Journal of …, 2009 - Springer
Steviol reacted with benzyl bromide and 1, 9-dibromononane in the system KOH-DMSO to
give the corresponding O-alkylation products at the carboxy group. The reaction of steviol …
give the corresponding O-alkylation products at the carboxy group. The reaction of steviol …
18-Succinyloxyabieta-8, 11, 13-triene as a new component from green shoots of the Siberian fir
VA Raldugin, VV Grishko, TP Kukina… - Russian chemical …, 2005 - Springer
A new diterpene derivative, 18-succinyloxyabieta-8, 11, 13-triene, was isolated from the
acidic fraction of the extract from wood greens of a Siberian fir. The chemical structure of the …
acidic fraction of the extract from wood greens of a Siberian fir. The chemical structure of the …
Flavonoids from Senecio viscosus
EM Suleimenov, RA Jose, SB Rakhmadieva… - Chemistry of natural …, 2009 - Springer
Raw material of Senecio viscosus L.(Compositae) first yielded the pyrrolizidine alkaloid
senecionine in 0.06–0.075% yield [1] and then the alkaloids squalidine and SF were …
senecionine in 0.06–0.075% yield [1] and then the alkaloids squalidine and SF were …