74483-11-7Relevant academic research and scientific papers
Alkenylzinc-Mediated Approach to the Vitamin D Skeleton. Application to the Synthesis of 6-Methyl Analogs of Vitamin and Previtamin D
Garcia, Ana M.,Mascarenas, Jose L.,Castedo, Luis,Mourino, Antonio
, p. 6353 - 6358 (2007/10/03)
Palladium-catalyzed cross-coupling of alkenylzinc reagents, bearing the C,D-ring/side chain portion, and (Z)-1-iodo-1,3-bis-exocyclic dienes (as A-ring precursors), provides a mild, convergent entry to the vitamin D skeleton, that is suitable for the synt
A novel entry to the vitamin D triene system
Mascarenas,Garcia,Castedo,Mourino
, p. 7589 - 7592 (2007/10/02)
The application of Negishi's cyclization methodology to the synthesis of (Z)-1-iodo-1,3-bis-exocyclic-dienes from acyclic precursors is described. This kind of compounds can be used for the preparation of conjugated systems such as the triene of vitamin D
Studies on Vitamin D (Calciferol) and Its Analogues. 19. Rearrangement of Vinylallenes to 1-Hydroxylated Vitamin D Model Systems Lacking the D Ring and Side Chain
Condran, Patrick,Okamura, William H.
, p. 4011 - 4015 (2007/10/02)
The thermally induced sigmatropic shifts of vinylallenone 7 and vinylallenol 8 were studied.The former (7) rearranges (approximately 100 deg C, 18 h) to previtamin ketone model system 13 in essentially quantitative yield; further thermolysis (approximatel
