Synthesis and Anti-HIV-1 Activity of Olean-9(11),12(13)-Dien-30-Oic Acid 3ß-(2-O-ß-D-Glucuronopyranosyl-ß-D-Glucuronopyranoside).

The glycyrrhizic acid (GA) analog olean-9(11),12(13)-dien-30-oic acid 3ß-(2-O-ß-D-glucuronopyranosyl-ß-D-glucuronopyranoside) (II) was synthesized via reduction of GA by NaBH4 in refluxing 2-PrOH:H2O with subsequent work up with HCl (5%). The cytotoxicity and antiviral activity of this glycoside against HIV-1 was studied in MT-4 cell culture. It was found that II was practically non-toxic for MT-4 cells while inhibiting accumulation of virus-specific protein p24 and RNA-dependent DNA-polymerase activity of HIV-1 reverse transcriptase (RT) (IC50 3.1 ±1.0 µg/mL).

[Uraline, a new norditerpenoid alkaloid from aerial parts of Delphinium uralense nevski].

Uraline, a new norditerpenoid alkaloid, was isolated from aerial parts of Delphinium uralense. The structure of 1alpha,7,8-trihydroxy-6beta,14alpha,16beta-trimethoxy-18-N-(2-methyl)succinylanthranoyloxyaconane was ascribed to the new compound on the basis of 1H and 13C NMR, IR, and mass spectra. The known alkaloids methyllycaconitine and delcorine were also isolated from the plant.