Alex Salmond has been accused of personally trying to persuade Donald Trump to endorse the decision to free the Lockerbie bomber.
The Trump Organisation claimed the approach three years ago was an attempt by the First Minister to get something in return for stepping into the row over the US businessman's controversial golf course application in Aberdeenshire.
A draft of words in defence of the decision to free Abdelbaset al-Megrahi was emailed by one of the First Minister's special advisers, Geoff Aberdein.
"We received a number of phone calls, initially from Geoff Aberdein, talking about the possibility of Mr Trump or the Trump Organisation issuing a statement supporting Scotland's decision to free the Lockerbie bomber," said a Trump Organisation spokesman.
"The mere suggestion that Mr Trump would do that was offensive and absurd. As Americans and New Yorkers who have unfortunately suffered and seen terrorism first-hand, it was ludicrous. The answer was no."
The spokesman said the First Minister was under political attack for the decision, announced by Justice Secretary Kenny MacAskill in 2009. "He was very unhappy and demanded to speak to Mr Trump," he said. "He was demanding and insisted he had helped us and now it was time to help him."
The accusation comes while Mr Trump is locked in an increasingly bitter planning battle to stop a wind turbine test centre being built in the North Sea in view of his golf course to the north of Aberdeen. In a series of highly-critical comments, Mr Trump has turned from speaking warmly of Mr Salmond to calling him mad. On Monday, the Trump Organisation spokesman likened the First Minister to Iranian president Mahmoud Ahmadinejad.
"He ignores due process and rams his own agenda through the system," the spokesman added, concerned that the proposed European Offshore Wind Deployment Centre is destined to go ahead.
A spokeswoman for the First Minister said the test centre application will be considered on its merits. She added: "Whether it is attacking the RSPB or claiming the Ministry of the Defence answers to the Scottish Government, the comments from the Trump Organisation are becoming increasingly bizarre.
"No amount of foot-stamping will change the fact that the application for the European Offshore Wind Deployment Centre will be considered on its merits and a decision made by Scottish ministers following full and thorough consideration of all issues relevant to the application."