Potential antitumor agents. 21. Dialkanolamine dialkanesulfonic esters

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Cancer Research

Background:

• Development of novel anticancer agents is crucial for treating leukemia.
• Structure-activity relationships guide the design of effective therapeutic compounds.
• Lipophilicity is a key factor influencing drug efficacy and pharmacokinetics.

Purpose of the Study:

• To synthesize and screen homologous dialkanesulfonic esters for antileukemic activity against L1210 cells.
• To establish quantitative correlations between chemical structure and biological activity.
• To identify key physicochemical parameters governing the antileukemic effectiveness of these compounds.

Main Methods:

• Synthesis of dialkanesulfonic esters using N-trityl derivatives.
• In vitro screening for L1210 activity and determination of increases in life-span (ILS).
• Linear least-squares regression analysis correlating ILS with log doses and lipophilic-hydrophilic balance (Rm values).
• Incorporation of an ionization factor to refine the correlation equation.

Main Results:

• Several synthesized compounds exhibited significant antileukemic activity in L1210 tests.
• Initial correlations of maximum ILS (ILSmax) with lipophilicity (Rm) were successful within homologous series but not across all compounds.
• Modification of Rm values with an ionization factor enabled a unified significant correlation for all active agents.

Conclusions:

• Dialkanesulfonic esters represent a promising class of compounds for L1210 leukemia treatment.
• A refined quantitative structure-activity relationship (QSAR) model incorporating lipophilicity and ionization is effective for predicting antileukemic activity.
• This approach facilitates the rational design and optimization of novel anticancer drug candidates.