In the statement issued by DU Registrar, the academicians said a handful of "misguided individuals" from within and outside the university were trying to derail the process of introducing the new structure.
"This intervention has been necessitated by the recent utterances and opinions of a handful of academics, self- appointed intellectuals and armchair columnists whose track record in the realm of academia and institution building speaks volumes for their true credentials," it said.
"This well thought out exercise has been the culmination of extraordinary efforts of a very large segment of the university's community.
"Those who refused or chose not to participate in some of these processes of consultation such as the Open Academic Congress do not have much of a right to voice concern," they said.
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On criticism by some outfits that an extra year would be a burden for the economically and socially weaker sections, the academicians said the new pattern will be better suited for these segments than the previous one as the choices for Masters degree would expand.
The new four-year undergraduate programme, to be introduced from this year's academic session, has been in controversy ever since a section of teachers and students objected to its "hurried implementation".
Left leaders, including Sitaram Yechury, have taken the issue to the doorsteps of Prime Minister Manmohan Singh.