Ken Yonezawa

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Two new diketopiperazine derivatives, bacillusamides A (1) and B (2), have been isolated from the EtOAc extract of the sea urchin-derived Bacillus sp. along with the known cyclo(-L-pro-L-val-) (3), cyclo(-L-pro-L-tyr-) (4), cyclo(-L-pro-L-phe-) (5). These structures were elucidated by extensive spectroscopic methods. Furthermore, the absolute configurations(More)
Two methods to enhance viewer's presence in movie-watching by telepresence robots in remote rooms are proposed. To keep coherance of eye-direction in all rooms, the system detects the object gazed by the viewer and controles the robot's face direction. To effectively express an affect change, which is tough to notice in non-face-to-face communication, the(More)
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