Another protest was planned for Miami, home to a large community of Venezuelans who have fled the country's economy crisis, on Thursday.
The New York-based investment bank came under fire from Venezuelan politicians and protesters in New York opposed to Maduro, who said the deal provided the cash-strapped government hundreds of millions of dollars in badly-needed hard currency.
Nomura Securities said it also bought about $100m worth of the bonds last week, according to Reuters reports.
Although Goldman didn't buy directly from the government, experts say the immediate increase in Venezuela's reserves indicates Goldman's money went straight to Maduro's coffers. This resulted in a major clash which saw some 60 people getting killed in Caracas and other cities.
The text backs mediation efforts by many countries in the region and calls on the EU's High Representative for foreign policy to explore actively with global and regional organisations "other measures that would enable the European Union to restore full democracy to Venezuela".
It affirmed that the government of the South American nation can not use growing aggression as a justification for denying unrestricted guarantees of the human rights of all people.
On Tuesday, Reuters reports, the National Assembly voted to request that the US investigate the deal, and protesters gathered outside Goldman's headquarters in New York City.
"We recognise that the situation is complex and evolving and Venezuela is in crisis".
Maduro has faced nearly two months of public protests while cutting imports of food and medicine to conserve cash and continue bond payments.
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The statement did not include the price of the bonds or the amount purchased.
"No matter how hard they try, Goldman Sachs and his top executives can not embellish this deal, which is immoral for Venezuelans", Julio Borges, president of the Venezuela's opposition-controlled National Assembly, told El Nacional.
Even though critics have described the constituent assembly as an attempt by the president to confuse voters expectant of regional elections, as well as override the opposition-led National Assembly, Maduro still has substantial support.
"As hard as it may try, Goldman Sachs ... can not put lipstick on this pig of a deal for Venezuelans", Borges said.
Goldman didn't comment on Borges' letter.
The letter adds that Congress will open an investigation into the transaction and that he will recommend "to any future democratic government of Venezuela not to recognize or pay these bonds".
The OAS meeting at the group's headquarters in Washington, however, was suspended because members could not agree on how to handle the Venezuelan crisis - a development that Foreign Minister Delcy Rodriguez celebrated as a victory.
The Venezuelan government hasn't made an worldwide public bond offering in several years since capital markets are essentially closed to it as its economy has shrunk 27% in four years, its oil production has declined rapidly and investors have become increasingly anxious about the growing likelihood of default.
"Little by little", Martínez Yabrudi said, "the countries of the OAS, the countries of the world have realized that they can not be accomplices" to repression.