Results 151 to 160 of about 9,122 (180)

Heterocyclic steroids: Synthesis of steroidal selena, tellura, and thia lactones of estrane series

Steroids, 1996
A successful approach in the synthesis of 3 beta-acetoxy-17a-selena-D-homo-1,3,5(10)-estratrien-17 -one (5), 3 beta-acetoxy-17a tellura-D-homo-1,3,5(10)-estratrien-17-one (6), and 3 beta-acetoxy-17a-thia-D-homo-1,3,5(10)-estratrien-17-one (7) was achieved from 3 beta-acetoxy-1,3,5(10)-estratrien-17-one (1).
A U, Siddiqui, Y, Satyanarayana, I, Ahmed, A H, Siddiqui   +3 more
openaire   +2 more sources

Antiandrogenic steroidal sulfonyl heterocycles. Utility of electrostatic complementarity in defining bioisosteric sulfonyl heterocycles

Journal of Medicinal Chemistry, 1992
Complementarity of electrostatic potential surface maps was utilized in defining bioisosteric steroidal androgen receptor antagonists. Semiempirical and ab initio level calculations performed on a series of methanesulfonyl heterocycles indicated the requirement for a partial negative charge at the heteroatom attached to C-3 of the steroid nucleus to ...
J P, Mallamo, G M, Pilling, J R, Wetzel, P J, Kowalczyk, M R, Bell, R K, Kullnig, F H, Batzold, P E, Juniewicz, R C, Winneker, H R, Luss   +9 more
openaire   +2 more sources

Steroids XXIII. Synthesis of Some Ring A-Fused Heterocyclic Steroids

Journal of Pharmaceutical Sciences, 1965
Several ring A-fused heterocyclic steroids, which were prepared as potential anabolic agents, are described. These include steroids with triazole, tetrahydropyrazine, and benzothiazine rings fused onto positions 2,3 of a derivative of methyltestosterone.
Norman J. Doorenbos, Conrad P. Dorn
openaire   +1 more source

Heterocycle steroids

Tetrahedron, 1976
G. Piancatelli, A. Scettri
openaire   +1 more source

Heterocyclic steroids—XVII

Tetrahedron, 1970
W.N. Speckamp, J.G. Westra, H.O. Hukman
openaire   +1 more source

Heterocyclic steroids

Steroids, 1964
C.H. Robinson, L.E. Finckenor, R. Tiberi, Eugene P. Oliveto   +3 more
openaire   +1 more source

Heterocyclic steroids XIV

Tetrahedron Letters, 1969
J.C. Hubert, W.N. Speckamp, H.O. Huisman
openaire   +1 more source

Heterocyclic steroids—XII

Tetrahedron, 1968
W.N. Speckamp, J.A. van Velthuysen, U.K. Pandit, H.O. Huisman   +3 more
openaire   +1 more source

Heterocyclic steroids—XIII

Tetrahedron, 1968
W.N. Speckamp, J.A. van Velthuysen, M.A. Douw, U.K. Pandit, H.O. Huisman   +4 more
openaire   +1 more source

Heterocyclic steroids VI

Tetrahedron Letters, 1966
null M.A.T. Sluyter, U.K. Pandit, W.N. Speckamp, H.O. Huisman   +3 more
openaire   +1 more source