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The title compound was synthesized as part of an effort to determine the identity of an abnormal steroid metabolite present in the urine of a patient exhibiting pronounced gynecomastia. The X-ray investigation of the synthesized compound showed that the 20-carbonyl of the 17 alpha oriented side chain lies under the D ring, and does not participate in hydrogen bonding in the crystal lattice. This conformation appears to be stable and sufficiently shielded that it is unlikely to make a major contribution to possible protein interactions.
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