| Synthesis and pharmacological activity of betulin dinicotinate OB Flekhter, LT Karachurina, LR Nigmatullina, TA Sapozhnikova, ... Russian Journal of Bioorganic Chemistry 28, 494-500, 2002 | 71 | 2002 |
| Synthesis of betulinic acid from betulin extract and study of the antiviral and antiulcer activity of some related terpenoids OB Flekhter, LR Nigmatullina, LA Baltina, LT Karachurina, FZ Galin, ... Pharmaceutical Chemistry Journal 36 (9), 484-487, 2002 | 68 | 2002 |
| Synthesis and pharmacological activity of betulin, betulinic acid, and allobetulin esters OB Flekhter, NI Medvedeva, LT Karachurina, LA Baltina, FZ Galin, ... Pharmaceutical Chemistry Journal 39, 401-404, 2005 | 53 | 2005 |
| Preparation of Betulinic Acids from Betulin Extract. Antiviral and Antiulcer Activity of Some Related Terpenoids. OB Flekhter, LR Nigmatullina, LA Baltina, LT Karachurina, FZ Galin, ... ChemInform 34 (4), no-no, 2003 | 44 | 2003 |
| Synthesis and antiviral activity of hydrazides and substituted benzalhydrazides of betulinic acid and its derivatives OB Flekhter, EI Boreko, LR Nigmatullina, NI Pavlova, SN Nikolaeva, ... Russian Journal of Bioorganic Chemistry 29, 296-302, 2003 | 41 | 2003 |
| Sulfur ylides in the synthesis of heterocyclic and carbocyclic compounds SN Lakeev, IO Maydanova, FZ Galin, GA Tolstikov Russian Chemical Reviews 70 (8), 655-672, 2001 | 38 | 2001 |
| Synthesis of the lupane group triterpenoids and there hepatoprotective activity OB Flekhter, LT Karachurina, VV Poroĭkov, LR Nigmatullina, LA Baltina, ... Bioorganicheskaia khimiia 26 (3), 215-223, 2000 | 38 | 2000 |
| Synthesis and antiviral activity of lupane triterpenoids and their derivatives OB Flekhter, EI Boreko, LR Nigmatullina, NI Pavlova, NI Medvedeva, ... Pharmaceutical Chemistry Journal 38, 355-358, 2004 | 37 | 2004 |
| High-Resolution 1H and 13C NMR of Glycyrrhizic Acid and Its Esters LA Baltina, O Kunert, AA Fatykhov, RM Kondratenko, LV Spirikhin, ... Chemistry of natural compounds 41, 432-435, 2005 | 36 | 2005 |
| Synthesis and antiviral activity of ureides and carbamates of betulinic acid and its derivatives OB Flekhter, EI Boreko, LR Nigmatullina, EV Tret'yakova, NI Pavlova, ... Russian Journal of Bioorganic Chemistry 29, 594-600, 2003 | 34 | 2003 |
| Synthesis and antiviral activity of lupane triterpenoids with modified cycle E OB Flekhter, NI Medvedeva, OS Kukovinets, LV Spirikhin, EG Galkin, ... Russian Journal of Bioorganic Chemistry 33, 584-588, 2007 | 31 | 2007 |
| The synthesis and hepatoprotective activity of esters of the lupane group triterpenoids OB Flekhter, LT Karachurina, VV Poroikov, LP Nigmatullina, LA Baltina, ... Russian Journal of Bioorganic Chemistry 26, 192-200, 2000 | 31 | 2000 |
| Synthesis of 3-O-acetylbetulinic and betulonic aldehydes according to Svern and the pharmacological activity of related oximes OB Flekhter, OY Ashavina, EI Boreko, LT Karachurina, NI Pavlova, ... Pharmaceutical Chemistry Journal 36 (6), 303-306, 2002 | 30 | 2002 |
| Synthesis and pharmacological activity of acylated betulonic acid oxides and 28-oxo-allobetulone OB Flekhter, EI Boreko, LR Nigmatullina, NI Pavlova, NI Medvedeva, ... Pharmaceutical Chemistry Journal 38, 148-152, 2004 | 29 | 2004 |
| Synthesis and antiinflammatory activity of new acylated betulin derivatives OB Flekhter, NI Medvedeva, LT Karachurina, LA Baltina, FS Zarudii, ... Pharmaceutical Chemistry Journal 36 (9), 488-491, 2002 | 26 | 2002 |
| Synthesis of olean-18 (19)-ene derivatives from betulin OB Flekhter, NI Medvedeva, GA Tolstikov, FZ Galin, MS Yunusov, ... Russian Journal of Bioorganic Chemistry 35, 233-239, 2009 | 24 | 2009 |
| Synthetic Transformations of Higher Terpenoids: XI. Synthesis of A-Nor-5bH-19b, 28-epoxy-18a-olean-3-one Derivatives. NI Medvedeva, OB Flekhter, EV Tretyakova, FZ Galin, LA Baltina, ... Russian journal of organic chemistry 40 (8), 2004 | 23 | 2004 |
| Synthesis and antiviral activity of betulonic acid amides and conjugates with amino acids OB Flekhter, EI Boreko, LR Nigmatullina, EV Tret'yakova, NI Pavlova, ... Russian Journal of Bioorganic Chemistry 30, 80-88, 2004 | 23 | 2004 |
| Synthesis of 19β,28-epoxy-23,24-dinor-A-neo-18α-olean-4-en-3-one from betulin NI Medvedeva, OB Flekhter, OS Kukovinets, FZ Galin, GA Tolstikov, ... Russian chemical bulletin 56, 835-837, 2007 | 22 | 2007 |
| Synthesis and antiviral activity of amides and conjugates of betulonic acid with amino acids OB Flekhter, EI Boreko, EV Tret'iakova, NI Pavlova, LA Baltina, ... Bioorganicheskaia Khimiia 30 (1), 89-98, 2004 | 22 | 2004 |
Leonid SpirikhinInstitute of Organic Chemistry of Ufa Scientific Centre of the Russian Academy of SciencesVerified email at anrb.ru
