The present invention is directed to tricyclic compounds of the formula (I), wherein all substituents are defined herein, as well as pharmaceutically acceptable compositions comprising compounds of the invention and methods of using said compositions in the treatment of various disorders.
                            本发明涉及公式(I)的
三环化合物,其中所有取代基在此定义,以及包括该发明化合物的药学上可接受的组合物,以及在治疗各种疾病中使用所述组合物的方法。