Commodity currencies slipped while the safe-haven yen gained ground after major crude exporters failed to agree on an output freeze.
CNBC's Geoff Cutmore reports from Russia on the performance of the ruble, which has tracked lower against the dollar.
The dollar fell broadly as a slide in oil prices ahead of weekend talks among producers in Doha.
Russian shares took a double whammy from sanctions and oil, but the market now offers "the bargain of the century," Templeton's Mark Mobius said.
The dollar fell against the yen on Thursday, snapping two days of gains, hurt by data showing benign U.S. inflation.
The dollar climbed to a two-week peak against the euro, as gains in stock markets and improved data out of China drew investors into riskier bets.
The dollar rebounded from a more than seven-month low against a basket of currencies, led by gains versus the safe-haven yen.
The dollar pared losses after hitting 17-month lows against the yen on Monday.
The yen struggled across the board after posting gains this week, weighed by warnings overnight by the Japanese finance minister.
The U.S. dollar fell below 108 yen for the first time in 17 months on Thursday.
The U.S. dollar hit a fresh 17-month trough against the yen on doubts that the BOJ would intervene to halt the yen's appreciation.
The yen soared to its highest in 17 months against the dollar as sentiment in stock and commodity markets soured, with crude oil retreating.
The U.S. dollar hit its lowest against the yen in two weeks on continued expectations of a slow path of Fed rate hikes this year.
The dollar turned higher on Friday after a better-than-expected U.S. nonfarm payrolls report was released.
The dollar hit its lowest level in more than five months against a basket of currencies on Thursday.
The dollar hit its lowest level against the euro in nearly seven weeks following dovish comments from Fed Chair Janet Yellen.
Dovish words from Fed Chair Janet Yellen on Tuesday have left traders contemplating whether the U.S. dollar will trend lower for the rest of the year.
The U.S. dollar edged lower against a basket of major currencies as traders awaited a speech from Federal Reserve Chair Janet Yellen.
The U.S. dollar eased against a basket of major currencies on Monday after the release of soft U.S. data.
The dollar was on track for a weekly gain of over 1 percent against a basket of currencies after several Fed officials gave hawkish signals.