CAS: 511-96-6; (2A,3B,5A,25R)-Spirostan-2,3-Diol

上下游产品

剑麻皂素 Tigogenin 77-60-1
(25R)-5A-螺甾烷-3-酮 Tigogenone 470-07-5
2α-Acetoxy-5α-Spirostan-3β-Ol 2781-69-3
(25R)-2α-Hydroxy-5α-Spirostan-3-One 848854-25-1
25D,5α-Spirostan-2α-Ol-3-On-3-Acetat 3001-32-9
龙舌兰皂苷乙酯 Hecogenin Acetate 915-35-5
Gitogenin 3-O-β-D-Glycopyranosyl(1->3)-β-D-Glucopyranoside
Trigoneoside Ib
26-O-β-D-Glucopyranosyl-(25R)-5α-Furostane-2α,3β,22ξ,26-Tetrol 3-O-β-D-Xylopyranosyl(1->4)-β-D-Glucopyranoside 290347-58-9
(25R)-2α,3β-Dihydroxy-5α-Spirostane 3-O-α-L-Rhamnopyranosyl-(1→2)-β-D-Galactopyranoside

📜剑麻皂素置于chromium(Vi) Oxide,Cerium(Iii) Chloride Heptahydrate,硫酸,三乙胺,间氯过氧苯甲酸,Sodium Hydroxide体系中,用 四氢呋喃,甲醇,二氯甲烷,丙酮 作为反应溶剂,化学反应 4.17H,反应生成 支脱皂苷元
参考文献:功能化 2,3-螺甾烷异构体的合成和抗真菌活性
标题:功能化 2,3-螺甾烷异构体的合成和抗真菌活性
摘要:侵袭性真菌感染是免疫系统受损个体的主要并发症.治疗侵袭性真菌感染的最重大挑战之一是许多生物体对广泛使用的抗真菌剂的抵抗力增加,因此开发新型抗真菌剂至关重要.许多天然产物已被发现是有效的抗微生物剂.特别是,从植物或海洋物种中分离出的含有螺甾烷糖苷部分的皂苷已被证明具有一系列抗菌特性.在这份报告中,白色念珠菌,新型隐球菌,光滑念珠菌和丝状真菌烟曲霉.
DOI:10.1016/j.Bmcl.2011.03.092

专利信息

专利号:US-2025183802-A1
优先权日:2023-11-30
标 题 :Pulse width modulation control circuit having dual loops
发明人：Hu kai-yu; FAN CHENG-HSUAN; CHEN YUNG-JEN; WANG CHIEN-HUI
权利人:RICHTEK TECHNOLOGY CORP
摘要:A pulse width modulation control circuit for controlling a power converter circuit includes: a main loop control circuit; and a light-load loop control circuit. The light-load loop control circuit includes a current synthesis circuit configured to generate a synthesized current signal according to an input voltage and a target value of an output voltage and an inductance value of an inductor in a power stage circuit of the power converter circuit. The light-load loop control circuit generates a pulse modulation signal in light-load mode according to the synthesized current signal, to control a duty ratio of the power stage circuit. In the light-load mode, the main loop control circuit enters a power-saving state to reduce the power consumption of the pulse width modulation control circuit. The power-saving state includes: reducing the power consumption of the current sense circuit or stopping the operation of the current sense circuit.