Addressing a ministerial level meeting of the Group of 77, he also urged the developing countries to keep their commitments made by them.
"Our task now is to implement what was agreed, and I look forward to the G-77 playing an active and constructive role in that process," he said.
Both developing and developed countries need to act, he said, adding for their part the developing countries will have to "promote good governance, fight corruption, pursue sound macroeconomic policies, and made transparent and effective use of public funds."
Developed countries must also honour their promise to provide aid at 0.7 per cent of GDP so that developing countries can make improvements where they are really needed, such as providing malaria bed nets, expanding school meal programmes, and eliminating user fees for primary school and health services.
However, he said he was disappointed with the lack of progress on trade, where "trade-distorting subsidies, quotas and tariffs" were undoing all the good works provided by debt relief and aid.
Annan also touched on UN reform measures, and said he was looking for the G-77's "engagement and support" in accomplishing "a more efficient, more effective, and more accountable" Secretariat and UN.
He also emphasised the need for getting the peace building commission up and running, making sure the human rights council is successfully negotiated, agreeing on a global anti-terrorism strategy, and protecting civilians from genocide.
"I look forward to working with you to translate our commitments into results, particularly for the weak and the poor most of them citizens of your countries, who we must never forget, represent the majority of the United Nations' membership," he said.
The G-77 now numbers 132 member states, and is the largest Third World coalition in the UN system.
The association provides the means for the developing countries to articulate their collective economic interests and it enhances their joint negotiating capacity on international in the UN system.
