The process according to this invention can produce an estrone acetal at a high yield and with economical advantages in the industrial scale and the estrone acetal thus obtained is useful as {TAIL ~ an estrone precursor} which is important as {HEAD ~ a female hormone} 
The process according to this invention can produce an estrone acetal at a high yield and with economical advantages in the industrial scale and the estrone acetal thus obtained is useful as { TAIL ~ an estrone precursor } which is important as { HEAD ~ a female hormone }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD