S. Kosemura et al., CITREOSPIROSTEROID, A NEW METABOLITE OF A HYBRID STRAIN KO-0011 DERIVED FROM PENICILLIUM-CITREO-VIRIDE-B. IFO-6200 AND IFO-4692, Tetrahedron letters, 38(42), 1997, pp. 7373-7374
A sterol with a spiro ring system of B/C rings, citreospirosteroid, ha
s been isolated from the mycelium of a hybrid strain KO 0011 derived f
rom Penicillium citreo-viride B. IFO 6200 and 4692. Its stereostructur
e has also been elucidated on the basis of its spectral data. It inhib
ited the growth of hypocotyls of lettuce seedlings, but promoted the g
rowth of roots of its seedlings. (C) 1997 Elsevier Science Ltd.