?url_ver=Z39.88-2004&rft_id=doi%3A10.1016%2FS0040-4039(99)00989-2&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Thakur%2C+A+K&rft.aulast=Thakur&rft.aufirst=A+K&rft.issue=27&rft.volume=40&rft.date=1999&rft.issn=00404039&rft.atitle=An+all-anti+conformation+of+the+%CE%B2-ala+moiety+in+the+crystalline+state&rft.title=Tetrahedron+Letters&rft.pages=5091-5094&rft.genre=article