223676-54-8Relevant articles and documents
Synthesis of longithorone B, a sixteen-membered farnesylated p- benzoquinone
Kato,Nagae,Hoshikawa
, p. 1941 - 1944 (2007/10/03)
The intramolecular coupling reactions at the C-1 position of the 10Z- farnesyl moiety appended at the 2'-position of 4'-methoxy phenol derivatives were examined with the aid of Hf(OTf)4 and LiClO4. When the phenol was protected with a TBDMS group, meta coupling predominated while para coupling occurred efficiently when protected with a pivaloyl group. The para-coupled product was transformed to longithorone B, recently isolated from a tunicate.