The primary difference between these three compounds is the change in chelator.
The gap occurs in all three materials at the same position, between the 9th and 10th modes, emphasizing the strong similarity between these three compounds.
Our previous work has characterized the transcriptome features of ATRA-induced differentiation and ATO-induced apoptosis in NB4 cells [18], and the results of the present study have allowed us to perform a detailed comparison of the expression patterns between these three compounds.
A recent meta-analysis found no difference in anti-tumor efficacy between these three compounds.
The peak shifts at 1092 and 1744 cm−1 confirmed the presence of molecular interactions between these two compounds.
Moreover, we analysed the possible reactions which may occur between these two compounds and their by-products outside and inside our body.
However, a major difference between these two compounds was observed as the oxidation of a methyl and a methylene in 3α-deacetyl-amoorastatin core to an oxymethylene (δC 71.92, δH 3.60, 3.89 (each 1H, d, J = 10.7 Hz) and an oxymethine [δC 68.60, δH 4.54 (dd, J = 4.4, 3.4 Hz] in 1, respectively.
The only difference between these two compounds was that the oxygenated methine (C-12) at δC 72.3 in (3β,12α -3,12-dihydroxyisopimara-7,15-dien-2-one [8] shifted downfield to δC 74.6 in 4, and concurrent chemical shift changes of those carbons surrounding C-12 also occurred.
The structural difference between these two compounds is the phenolic group in thymol as compared to menthol that only has the hydroxyl group; p-Cymene has the benzene group without hydroxyl group with an activity of 24.0 μg/mL; this demonstrate the importance of the phenolic group in the larvicidal activity.
Objectives: Neopterin and homocysteine promote vascular smooth muscle cell proliferation through the activation of nuclear factorκ B. The aim of this study was to investigate the relation between these two compounds in healthy subjects by a rapid HPLC-fluorometric method which simplifies sample pretreatment for the measurement of neopterin in serum.
Compound 1 showed the typical hemiacetal and oxymethine resonances as those in 4. The major difference between these two compounds was that the tri-substituted double bond in 4 was replaced by a di-substituted double bond located between C-6 and C-7 in 1, which was confirmed by the 1H-1H correlationstiofs of H-6 (δ H 5.88) with H-5 (δ H 1.93) and H-7 (δ H 5.78).
