Dear Dr. de Beer, 'C-glycoside Synthesis' by Maarten H.D. Postema, published by CRC Press in 1995 contains a chapter (no. 10) titled 'Synthesis of Naturally Occurring Aryl C-Glycosides' which sounds like it may be helpful. There are 61 references in this chapter, some of which may prove useful for your interests. Sincerely, Mike Q.