نتایج جستجو برای: pentacyclic graphs
تعداد نتایج: 98241 فیلتر نتایج به سال:
Moronic acid is a pentacyclic triterpenoid made up of olean-18-ene with an oxo group at position 3 and carboxy 28. It's from oleanane hydride. A few investigations have demonstrated that wide scope pharmacological effects such as Antidiabetic activity, Anti-AIDS agents, Chemotherapeutic Virus lytic, Anti-HIV, Cytotoxic Anti-herpes, Antimicrobial Ribosome-loaded mRNAs.
the ethyl acetate partition of dried methanolic extract of aerial parts of euphorbia microsciadia (euphorbiaceae) afforded three pentacyclic triterpenes, betulinic acid (1) from lupane type, oleanolic acid (2) from oleane type and ursolic acid (3) from ursane type triterpenes that are reported for the first time in this plant. these three compounds were structurally compared through their mass ...
let g be a (p, q) graph. let f : v (g) → {1, 2, . . . , k} be a map. for each edge uv, assign the label gcd (f(u), f(v)). f is called k-prime cordial labeling of g if |vf (i) − vf (j)| ≤ 1, i, j ∈ {1, 2, . . . , k} and |ef (0) − ef (1)| ≤ 1 where vf (x) denotes the number of vertices labeled with x, ef (1) and ef (0) respectively denote the number of edges labeled with 1 and not labeled with 1....
A synthetic equivalent of the Nazarov reagent, the silyl derivative 2, able to undergo base-catalyzed double Michael addition reactions with α,β-unsaturated carbonyl compounds has been developed. The new reagent satisfactorily reacts with unsaturated indolo[2,3-a]quinolizidine lactams to give pentacyclic yohimbinone-type derivatives.
A novel type of anti and syn isomers of a pentacyclic compound consisting of two thiophene rings and one pyrrole ring were efficiently synthesized from benzo[b]thiophene, and the anti isomer exhibits better charge transport and OFET properties compared with the syn isomer and its N-hexyl substitution.
Eighteen aminoglycosidic antibiotics and their degradation products, containing 2-deoxystreptamine as a commonmoiety, were separated by gas-liquid chromatography. The largest compounds examined included the pentacyclic lividomycins A and B. These compoundswere separable from each other either as pertrimethylsilyl derivatives or N-trifluoroacetyl pertrimethylsilyl derivatives on a single column ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید