15505-85-8Relevant academic research and scientific papers
Preparation of 17α-iodoethynylandrosta- And 17α-(2-iodoethenyl) androsta-4,6-dien-17β-ol-3-ones as active site-directed photoaffinity ligands for androgen-binding proteins
Cruz, Pablo J. Diaz,Mason, N. Scott,Danzo, Benjamin J.,Smith, Howard E.
, p. 569 - 576 (1992)
Unsaturated analogues of androst-4-en-17β-ol-3-one, each with a 17α-iodoethynyl or 17α-(2-iodoethenyl) substituent, were prepared, and their relative binding affinities (RB As) for androgen-binding protein (ABP) were compared with those of 5α-androstan-17β-ol-3-one, androst-4-en-17β-ol-3-one, androsta-4, 6-dien-17β-ol-3-one, and androsta-1,4,6-trien-17β-ol-3-one. These binding studies indicate that the iodine[125I] analogues of 17α-iodoethynyl and 17α-[(E)-2-iodoethenyl] derivatives of androsta-4,6-dien-17β-ol-3-one and androsta-1,4,6-trien-17β-ol-3-one will have RBAs at least twice as great as that of 5α-androstan-17β-ol-3-one. They can be prepared from 17α-ethynylandrosta-4-en-17β-ol-3-one, the final synthetic step using N-[125I]iodosuccinimide, and are potential radioiodinated, active site-directed photoaffinity ligands for ABP and testosterone-binding globulin.
Process for the preparation of (Z)-17α-halovinyl steroids
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, (2008/06/13)
(Z)-17α-halovinyl steroids of general Formula I STR1 wherein . . . . is a single bond or a double bond, V is a carbon-to-carbon bond or a methylene group, R1 is a hydrogen atom or a methyl group, X is a chlorine atom, a bromine atom or an iodine atom, and A symbolizes the remainder of the steroid molecule, are prepared by hydrogenating a 17α-haloethynyl steroid of formula II with diimide. STR2 wherein . . . , V, R1, X and A have the meanings given above. The compounds of Formula I include both known and novel compounds, all of which are pharmacologically active.
