The title compound, C(24)H(34)O(8), a natural ent-kaurane diterpenoid, is composed of four rings with the expected cis and trans junctions. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds. In addition, an intra-molecular O-H⋯O hydrogen bond occurs.

Role of the tectorial membrane revealed by otoacoustic emissions recorded from wild-type and transgenic Tecta ENT/ENT mice ABSTRACT Distortion product otoacoustic emissions (DPOAE) were recorded from wild-type mice and mutant Tecta ENT/ENT mice with detached tectorial membranes (TM), under combined ketamine/xylaxine anaesthesia. In Tecta ENT/ENT mice DPOAEs could be detected above the noise flo...

Mutants of Arabidopsis thaliana deficient in gibberellin synthesis (ga1-3 and ga1-6), and a gibberellin-insensitive mutant (gai) were compared to the wild-type (WT) Landsberg erecta line for flowering time and leaf number when grown in either short days (SD) or continuous light (CL). The ga1-3 mutant, which is severely defective in ent-kaurene synthesis because it lacks most of the GA1 gene, ne...

The incubation of 15beta-hydroxy-3-oxo-ent-kaur-16-ene (1) with the fungus Gibberella fujikuroi afforded 11beta-hydroxy-3,15-dioxo-ent-kaurane (6), 11beta,15beta-dihydroxy-3-oxo-ent-kaur-16-ene (8), 7beta,11beta,15beta-trihydroxy-3-oxo-ent-kaur-16-ene (9), 7alpha,11beta-dihydroxy-3,15-dioxo-ent-kaurane (7), and 7alpha,11beta,15beta-trihydroxy-3-oxo-ent-kaur-16-ene (10). The incubation of 15beta...

Lukashkin, Andrei N., Victoria A. Lukashkina, P. Kevin Legan, Guy P. Richardson, and Ian J. Russell. Role of the tectorial membrane revealed by otoacoustic emissions recorded from wild-type and transgenic Tecta ENT/ ENT mice. J Neurophysiol 91: 163–171, 2004. First published October 1, 2003; 10.1152/jn.00680.2003. Distortion product otoacoustic emissions (DPOAE) were recorded from wildtype mice...