There is a literary connection. Leslie W. Walck has written [a book][1] on this subject showing the similarities in style and vocabulary demonstrate that Matthew was familiar with this section of Enoch (*Parables of Enoch*). *1 Enoch* was a popular work, though not seen as inspired. It was never listed in any Jewish list of canon (for example Josephus specifies 22 books that line up with the modern, Jewish canon. The Qumranites never write commentary on it and in one of their letters state they recognize only the mainstream, Jewish canon). Similarly, Jesus refers to the Essenic work *[War Between the Sons of Light and Sons of Darkness][2]* in [John 12:36][3]. Jude later quotes from *1 Enoch* ([Jude 1:14-15][4]) and *Assumption of Moses* ([Jude 1:9][5]). These works can be quoted and alluded to without the whole work being therefore seen as authoritative. None of the references include the common introduction to an inspired work "it is written."

Those quotes mean the writer got that part right (even a blind squirrel finds a nut occasionally). In this case, Jesus is saying that the pictures of how the Son of Man comes in glory are correct, but the identity of the Son of Man with Enoch is not correct. The latter can be seen in how Jesus describes himself as the Son of Man.

Of the many uses of Son of Man as a self reference:

>[Matthew 20:17-19][6] As Jesus was going up to Jerusalem, he took the twelve aside privately and said to them on the way, “Look, we are going up to Jerusalem, and the Son of Man will be handed over to the chief priests and the experts in the law. They will condemn him to death, and will turn him over to the Gentiles to be mocked and flogged severely and crucified. Yet on the third day, he will be raised.”

>[Mark 10:32-34][7] They were on the way, going up to Jerusalem. Jesus was going ahead of them, and they were amazed, but those who followed were afraid. He took the twelve aside again and began to tell them what was going to happen to him. “Look, we are going up to Jerusalem, and the Son of Man will be handed over to the chief priests and experts in the law. They will condemn him to death and will turn him over to the Gentiles. They will mock him, spit on him, flog him severely, and kill him. Yet after three days, he will rise again.”

>[Luke 18:31-34][8] Then Jesus took the twelve aside and said to them, “Look, we are going up to Jerusalem, and everything that is written about the Son of Man by the prophets will be accomplished. For he will be handed over to the Gentiles; he will be mocked, mistreated, and spat on. They will flog him severely and kill him. Yet on the third day he will rise again.” 

These predictions of the death (and resurrection) of the Son of Man would have been anathema to the writer of Enoch who identified the Son of Man as ever triumphant.


  [1]: http://www.amazon.com/Parables-Enoch-Matthew-Jewish-Christian/dp/0567027295
  [2]: http://dss.collections.imj.org.il/war
  [3]: https://net.bible.org/#!bible/John+12:36
  [4]: https://net.bible.org/#!bible/Jude+1:14
  [5]: https://net.bible.org/#!bible/Jude+1
  [6]: https://net.bible.org/#!bible/Matthew+20:17
  [7]: https://net.bible.org/#!bible/Mark+10:32
  [8]: https://net.bible.org/#!bible/Luke+18:31