Ar. Delera et al., STEREOSELECTIVE ISOMERIZATION OF 10-ARYLSULFENATE-11,12-DEHYDRORETINOIDS TO 9-CIS-RETINOIDS, Tetrahedron letters, 39(25), 1998, pp. 4575-4578
The C-7-C-12 triene fragment of 9-cis-retinoids 8 was stereoselectivel
y generated by treatment of propargylic alcohol 3 with phenylsulfenyl
chloride/triethylamine at -78 degrees C, followed by stereospecific re
duction of the resulting vinylsulfoxide (t-BuLi, MeLi, MeOH, -78 degre
es C). Thus, 9-cis-retinoic acid 2, the natural ligand of the retinoid
X receptor (RXR) was straightforwardly synthesized from 8 in two step
s. (C) 1998 Elsevier Science Ltd. All rights reserved.