%0 Conference Proceedings %T An alternative approach to the synthesis of new 2-substitueted-4,9- dimethyl-9H-pyrimido[4,5-b]indole derivatives %A Azizollahi, Hamid %A Eshghi, Hossein %A Bakavoli, Mehdi %J بیست و هفتمین سمینار شیمی آلی ایران %D 2019