KIEV, Sept. 24 - Naftogaz Ukrayiny, the state oil and gas company, on Thursday tried to persuade international holders of its $500 million eurobond to reschedule the debt for five years through October 2014.

“The company asked the holders of eurobonds to swap 100% of the securities for new bonds, also denominated in U.S. dollars, with a coupon of 9.5% and with sovereign guarantee of the Ukrainian state,” Naftogaz said in a statement. “The maturity of the new bonds is September 2014.”