text: Yo, listen up, I got a story to tell,
  'Bout a synthesis that's done so well.
  Novel estrone 16 alpha, 17 alpha-oxazoline, yo,
  D-ring substitutions, compounds 6a-g, let's go.
  
  Started with 16 alpha-azido-3-methoxyestra-1,3,5-trien-17-one,
  In methanol, Luche reaction, we ain't done.
  Added CeCl3, reduced it down,
  Got two epimeric azido alcohols, representin' the town.
  
  16 alpha-azido-17 alpha-hydroxy, and 16 alpha-azido-17 beta-hydroxy,
  Derivatives of estra-1,3,5(10)-triene-3-methyl ether, so fly.
  Yielded 90% and 7.6%, respect the game,
  We playin' it smart, ain't no one to blame.
  
  Then we took 16 alpha-azido-17 alpha-hydroxy-estra-1,3,5(10)-triene-3-methyl ether,
  Schmidt rearrangement, yo, we makin' it better.
  Used a range of benzaldehydes, no time to rest,
  Got d-ring substituted estrone 16 alpha, 17 alpha-oxazoline, the best.
  
  But wait, there's more, we ain't done yet,
  Tested the antiproliferative activities, don't forget.
  MTT assays on human cancer cell lines,
  HeLa, SiHa, C-33 A, A2780, MCF-7, MDA-MB-231, and T47D, all in their prime.
  
  That's how we roll, in the lab, makin' moves,
  Synthesizing compounds, changin' the grooves.
  Estrone derivatives, oxazoline style,
  Science and rap, yo, we goin' wild.