* Euro hit by reported Greek comments
* U.S. jobless claims fall; inflation contained
* Risk demand dwindles, high-risk FX edge lower (Adds comment, U.S. data, updates prices, changes byline, dateline; previous LONDON)
By Gertrude Chavez-Dreyfuss
NEW YORK, March 18 (Reuters) - The euro weakened against the dollar on Thursday as a published report saying Greece was not optimistic about receiving aid from euro zone members heightened uncertainty over a resolution to its debt problems.
An unidentified Greek official quoted in the report said Greece was increasingly pessimistic about the prospect for assistance at a March 25 European Union summit and may seek International Monetary Fund aid during the April 2-4 Easter weekend.
"We have seen some euro weakness just on the uncertainty over who will aid Greece. It seems that Greece could lean toward the IMF and this has spurred a little bit of risk aversion," said Camilla Sutton, senior currency strategist at Scotia Capital in Toronto.
Greece, battling with crippling debts, has said it is counting on EU leaders to approve a mechanism to help the country at next week's meeting.
But some countries -- especially Germany, the EU's biggest paymaster -- are wary of making concrete promises and analysts said the Dow Jones Newswires report suggested a rift between Greece and Germany may be deepening. For more see [
].Comments from German Chancellor Angela Merkel saying on Wednesday the Greek crisis had landed the euro with its biggest challenge were also putting selling pressure on the euro zone single currency. [
]In early New York trading, the euro <EUR=> was down around 0.4 percent on the day at $1.3678, pulling back from a five-week high hit on Wednesday.
"It's noteworthy that we're still in yesterday's ranges and even the euro has bounced off its lows. We have seen it stabilize and the euro is now trading within a band," Scotia's Sutton said.
The euro struggled as European shares <
> retreated from a 17-month closing high hit on Wednesday, while prices for oil <CLC1>, another risky asset, fell 0.5 percent on the day.The euro hit the day's low at $1.3648 in early European trade, but losses were limited due to suspected demand from Asian central banks around that level, traders said, while trendline support around $1.3640 also prevented more losses.
The dollar rose 0.46 percent against a basket of currencies to 80.005 <.DXY>. The greenback slipped 0.2 percent to 90.13 yen <JPY=> as the Japanese currency benefited from risk aversion, pushing the euro <EURJPY=R> down 0.5 percent to 123.35 yen.
Data showing a fall in the latest U.S. weekly jobless claims data and that U.S. inflation was contained spurred modest dollar selling on slightly higher risk appetite, but overall markets was cautious and focused on Greece.
"The jobless claims number shows the labor market continues to stabilize, however there is very little if any price pressure in the U.S. which would allow the Fed to leave interest rates low for some time," said John Doyle, foreign exchange strategist at Tempus Consulting in Washington.
"It is a very dollar muted reaction so far and the dollar will continue to trade on fears the Greek bailout plan may be unraveling."
Against the Canadian dollar <CAD=D4> the U.S. dollar pulled back from a 20-month low of C$1.0071 on Wednesday to trade at C$1.0101 but analysts see the pair hitting parity in the near term on speculation that Canadian interest rates may soon rise. (Additional reporting by Neal Armstrong in London and Nick Olivari in New York; Editing by James Dalgleish)