Here we describe the divergent, biosynthetically inspired syntheses of (+/-)-rhodonoids C-G and (+/-)-ranhuadujuanine B. The key steps of the Syntheses inelude the construction: of the chromene unit through a formal oxa-[3 + 3] annulation and a biomimetic acid-catalyzed ring Cyclization. Cationic [2 + 2]:cydoadclition is accomplished to form the cyclobutane core of (+/-)-rhcidonoids E and F.

The ability to selectively forge C-heteroatom bonds by C-F scission is typically accomplished by metal catalysts, specialized ligands and/or harsh reaction conditions. Described herein is a base-mediated defluorosilylation of unactivated C(sp(2))-F and C(sp(3))-F bonds that obviates the need for metal catalysts. This protocol is characterized by its simplicity, mild reaction conditions, and wide scope, even within the context of late-stage functionalization, constituting a complementary approach to existing C-Si bond-forming protocols.

Let c be a nonzero constant and f(z) be a transcendental meromorphic function of finite order. Under some conditions, we study the relationships between the exponent of convergence of fixed points of f(z), its shift f(z vertical bar c) and forward differences Delta(n)(c)f(z), n is an element of N+.