_publ.section_title
    ;  trans-3-Benzoyl-2-(tert-butyl)-4-(iso-butyl)-
       1,3-oxazolidin-5-one
    ;

    _publ.section_abstract
    ;  The oxazolidinone ring is a shallow envelope
       conformation with the tert-butyl and iso-butyl groups
       occupying trans-positions with respect to the ring.  The
       angles at the N atom sum to 356.2\%, indicating a very
       small degree of pyramidalization at this atom.  This is
       consistent with electron delocalization between the N
       atom and the carbonyl centre [N-C=O = 1.374(3)\%A].
    ;

     _publ.section_title
    ;  Hemiasterlin methyl ester
    ;

    _publ.section_title_footnote
    ;  IUPAC name: methyl 2,5-dimethyl-4-{2-[3-methyl-
       2-methylamino-3-(N-methylbenzo[b]pyrrol-
       3-yl)butanamido]-3,3-dimethyl-N-methyl-
       butanamido}-2-hexenoate.
    ;