New synthetic strategies to vitamin D analogues modified at the side chain and D ring. Synthesis of 1α,25-dihydroxy-16-ene-vitamin D3 and C-20 analogues

1. De Los Angeles Rey, M.
2. Martínez-Pérez, J.A.
3. Fernández-Gacio, A.
4. Halkes, K.
5. Fall, Y.
6. Granja, J.
7. Mouriño, A.