摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

脂质和类脂质分子

中文名称 英文名称 CAS号 化学式 结构式图片
(2,2-二甲基-1,3-二氧戊环-4-基)甲基棕榈酸酯 1,2-O-isopropylidene-3-O-palmitoylglycerine 18418-21-8 C22H42O4
(2,2-二甲基-1,3-二氧戊环-4-基)甲基棕榈酸酯
(2,2-二甲基-1,3-二氧戊环-4-基)甲基二十烷酸酯 Eicosanoic acid, 2,2-dimethyl-1,3- dioxolan-4-ylmethyl ester 57156-96-4 C26H50O4
(2,2-二甲基-1,3-二氧戊环-4-基)甲基二十烷酸酯
(2,2-二甲基-1,3-二氧戊环-4-基)甲基(9E)-9-十八碳烯酸酯 1,2-acetonide-3-oleoylglycerol 33001-45-5 C24H44O4
(2,2-二甲基-1,3-二氧戊环-4-基)甲基(9E)-9-十八碳烯酸酯
(2,2-二甲基-1,3-二噁戊环-4-基)甲基甲基2,6-二甲基-4-(3-硝基并一基)-1,4-二氢吡啶-3,5-二羧酸酯 hydron;11-[2-[(2-methyl-2-sulfanylpropanoyl)amino]ethyl-(2-methyl-2-sulfanylpropyl)amino]undecanoic acid;dichloride —— C21H44Cl2N2O3S2
(2,2-二甲基-1,3-二噁戊环-4-基)甲基甲基2,6-二甲基-4-(3-硝基并一基)-1,4-二氢吡啶-3,5-二羧酸酯
(2,2-二乙基-1,3-二氧代丙烷-1,3-二基)二氨基甲酸二乙酯 <i>N</i>,<i>N</i>'-bis-ethoxycarbonyl-2,2-diethyl-malonic acid diamide 63884-60-6 C13H22N2O6
(2,2-二乙基-1,3-二氧代丙烷-1,3-二基)二氨基甲酸二乙酯
(2,2,4-三甲基-3-环戊烯-1-基)乙醛 isocampholenic aldehyde 3899-09-0 C10H16O
(2,2,4-三甲基-3-环戊烯-1-基)乙醛
(2,2,4-三甲基-3-壬酰氧基-戊基)壬酸酯 2,2,4-trimethyl-1,3-bis-nonanoyloxy-pentane 15721-83-2 C26H50O4
(2,2,4-三甲基-3-壬酰氧基-戊基)壬酸酯
(2,2,2-三氯-1-二乙氧基磷酰乙基)3-甲基丁酸酯 Phosphonic acid, (2,2,2-trichloro-1-hydroxyethyl)-, diethyl ester, isovalerate 73825-58-8 C11H20Cl3O5P
(2,2,2-三氯-1-二乙氧基磷酰乙基)3-甲基丁酸酯
(2,2,2-三氯-1-丁酰基氧乙基)膦酸二乙酯 O,O-Diethyl-(1-n-butyryl-oxy-2,2,2-trichlorethyl)-phosphonat 53102-27-5 C10H18Cl3O5P
(2,2,2-三氯-1-丁酰基氧乙基)膦酸二乙酯
(2'Z,4'Z)-26',27'-二羟基-9',15'-二甲基-6'H,21'H-螺[环氧乙烷-2,10'-[7,12,20,25,28]五氧杂六环[21.4.3.18,11.01,24.09,18.013,18]三十一碳[2,4,14,22]四烯]-6',21'-二酮 Roritoxin A 102852-48-2 C29H34O10
(2'Z,4'Z)-26',27'-二羟基-9',15'-二甲基-6'H,21'H-螺[环氧乙烷-2,10'-[7,12,20,25,28]五氧杂六环[21.4.3.18,11.01,24.09,18.013,18]三十一碳[2,4,14,22]四烯]-6',21'-二酮
(2'S)-2',3',6',7'-四氢-2'beta-(羟基甲基)-2',4',6'-三甲基螺[环丙烷-1,5'-[5H]茚]-3'alpha,6'beta,7'alpha-三醇 2-(Hydroxymethyl)-2,5,7-trimethylspiro[1,4-dihydroindene-6,1'-cyclopropane]-1,4,5-triol 25532-76-7 C15H22O4
(2'S)-2',3',6',7'-四氢-2'beta-(羟基甲基)-2',4',6'-三甲基螺[环丙烷-1,5'-[5H]茚]-3'alpha,6'beta,7'alpha-三醇
(1β,3β,5β,25S)-螺甾烷-1,3,5-三醇 Convallagenin A 17149-95-0 C27H44O5
(1β,3β,5β,25S)-螺甾烷-1,3,5-三醇
(1β,3β,5α,22xi,25R)-螺甾烷-1,3-二醇 Brisbagenin 16963-78-3 C27H44O4
(1β,3β,5α,22xi,25R)-螺甾烷-1,3-二醇
(1α,3α,6α,10α,13α,14α,16β,17xi)-20-乙基-3,13-二羟基-1,6,16-三甲氧基-4-(甲氧基甲基)-15-羰基乌头烷-14-基4-甲氧基苯酸酯 Pyrojesaconitine 16298-91-2 C33H45NO10
(1α,3α,6α,10α,13α,14α,16β,17xi)-20-乙基-3,13-二羟基-1,6,16-三甲氧基-4-(甲氧基甲基)-15-羰基乌头烷-14-基4-甲氧基苯酸酯
(1α,3α,6α,10α,13α,14α,16α,17xi)-20-乙基-3,13-二羟基-1,6,16-三甲氧基-4-(甲氧基甲基)-15-羰基乌头烷-14-基苯酸酯 16-epi-Pyroaconitine 123834-18-4 C32H43NO9
(1α,3α,6α,10α,13α,14α,16α,17xi)-20-乙基-3,13-二羟基-1,6,16-三甲氧基-4-(甲氧基甲基)-15-羰基乌头烷-14-基苯酸酯
(1α,2β,4Aα,4Bβ,10β)-2,4A,7-三羟基-1-甲基-8-亚甲基赤霉素-3-烯-1,10-二甲酸-1,4A-内酯单钾盐 Gibberellic acid potassium salt 125-67-7 C19H22KO6
(1α,2β,4Aα,4Bβ,10β)-2,4A,7-三羟基-1-甲基-8-亚甲基赤霉素-3-烯-1,10-二甲酸-1,4A-内酯单钾盐
(1beta,3alpha,5beta,7alpha,12alpha)-1,3,7,12-四羟基胆烷-24-酸 1β,3α,7α,12α-tetrahydroxy-5β-cholan-24-oic acid 80875-94-1 C24H40O6
(1beta,3alpha,5beta,7alpha,12alpha)-1,3,7,12-四羟基胆烷-24-酸
(1beta,3alpha,5beta,12alpha)-1,3,12-三羟基胆烷-24-酸 (R)-4-((1R,3S,5R,8S,9S,10S,12S,13R,14S,17R)-1,3,12-trihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid 80434-32-8 C24H40O5
(1beta,3alpha,5beta,12alpha)-1,3,12-三羟基胆烷-24-酸
(1beta,3alpha,5beta)-1,3-二羟基-胆烷-24-酸 1β,3α-dihydroxy-5β-cholan-24-oic acid 89238-74-4 C24H40O4
(1beta,3alpha,5beta)-1,3-二羟基-胆烷-24-酸
(1beta,11beta,12alpha)-1,11,12-三羟基苦木-3-烯-2,16-二酮 brujavanol E 4668-74-0 C20H28O6
(1beta,11beta,12alpha)-1,11,12-三羟基苦木-3-烯-2,16-二酮
(1b,11b,12a,15b)-1,11,12,13,15-五羟基-苦木-3-烯-2,16-二酮 soulameanone 74133-46-3 C20H28O8
(1b,11b,12a,15b)-1,11,12,13,15-五羟基-苦木-3-烯-2,16-二酮
(1alpha,4alpha,4aalpha,5beta,8beta,8aalpha)-1,4,4a,5,6,7,8,8a-八氢-1,4:5,8-二甲桥萘-9-酮 1,4:5,8-Dimethanonaphthalen-9-one, 1,4,4a,5,6,7,8,8a-octahydro-, (1alpha,4alpha,4aalpha,5beta,8beta,8aalpha)- 36204-31-6 C12H14O
(1alpha,4alpha,4aalpha,5beta,8beta,8aalpha)-1,4,4a,5,6,7,8,8a-八氢-1,4:5,8-二甲桥萘-9-酮
(1alpha,4alpha,4aalpha,5beta,7alpha,7abeta,9(R*),11aR*)-2,3,4,4a,5,6,7,7a,10,11-十氢-9-(2-羟基-1-甲基乙基)-8-(1H-吲哚-3-基)-4,4a,7-三甲基-1H-苯并(d)萘-1,5-二醇 (1S,4R,4aS,5R,7R,7aS)-9-[(2S)-1-hydroxypropan-2-yl]-8-(1H-indol-3-yl)-4,4a,7-trimethyl-1,2,3,4,5,6,7,7a,10,11-decahydrobenzo[d]naphthalene-1,5-diol 76410-56-5 C28H39NO3
(1alpha,4alpha,4aalpha,5beta,7alpha,7abeta,9(R*),11aR*)-2,3,4,4a,5,6,7,7a,10,11-十氢-9-(2-羟基-1-甲基乙基)-8-(1H-吲哚-3-基)-4,4a,7-三甲基-1H-苯并(d)萘-1,5-二醇
(1alpha,3beta,6Z)-9,10-开环胆甾-5(10),6,8-三烯-1,3-二醇 1-Hydroxyprevitamin D3 41461-13-6 C27H44O2
(1alpha,3beta,6Z)-9,10-开环胆甾-5(10),6,8-三烯-1,3-二醇
(1alpha,3beta,5Z,7E,24S)-24-环丙基-1,3-二[[叔丁基二甲基硅烷基]氧基]-9,10-开环胆甾-5,7,10(19),22-四烯-24-醇 (1S,3R,5Z,7E,14xi,22Z,24S)-1,3-Bis{[tert-butyl(dimethyl)silyl]oxy}-26,27-cyclo-9,10-secocholesta-5,7,10,22-tetraen-24-ol 910133-69-6 C39H68O3Si2
(1alpha,3beta,5Z,7E,24S)-24-环丙基-1,3-二[[叔丁基二甲基硅烷基]氧基]-9,10-开环胆甾-5,7,10(19),22-四烯-24-醇
(1alpha,3beta,5Z,7E)-24-环丙基-9,10-开环胆甾-5,7,10(19)-三烯-1,3,24-三醇;MC976 5-[2-[1-(5-cyclopropyl-5-hydroxypentan-2-yl)-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexane-1,3-diol —— C27H42O3
(1alpha,3beta,5Z,7E)-24-环丙基-9,10-开环胆甾-5,7,10(19)-三烯-1,3,24-三醇;MC976
(1alpha,3beta)-胆甾-5-烯-1,3-二醇 1α,3β-dihydroxycholest-5-ene 26358-75-8 C27H46O2
(1alpha,3beta)-胆甾-5-烯-1,3-二醇
(1alpha,3beta)-胆甾-5-烯-1,3-二基二乙酸酯 (5-Cholesten-1α,3β-diol)-diacetat 35339-68-5 C31H50O4
(1alpha,3beta)-胆甾-5-烯-1,3-二基二乙酸酯
(1alpha,2beta,4Aalpha,4Bbeta,10beta)-2,7-二羟基-1-甲基-8-亚甲基赤霉素烷-1,4A,10-三羧酸 GA<sub>28</sub> 32780-05-5 C20H26O8
(1alpha,2beta,4Aalpha,4Bbeta,10beta)-2,7-二羟基-1-甲基-8-亚甲基赤霉素烷-1,4A,10-三羧酸
(1alpha,2beta,4Aalpha,4Bbeta,10beta)-2,7-二羟基-1,4A-二甲基-8-亚甲基赤霉素烷-1,10-二甲酸 gibberellin A<sub>18</sub> 23313-48-6 C20H28O6
(1alpha,2beta,4Aalpha,4Bbeta,10beta)-2,7-二羟基-1,4A-二甲基-8-亚甲基赤霉素烷-1,10-二甲酸
(1alpha,2alpha,5alpha)-2,6,6-三甲基双环[3.1.1]庚烷-3-酮 pinocamphone 547-60-4 C10H16O
(1alpha,2alpha,5alpha)-2,6,6-三甲基双环[3.1.1]庚烷-3-酮
(1alpha,2alpha,4alpha,5beta,7beta,8alpha)-3,3,6,6,9,9-六甲基-四环[6.1.0.0(2,4).0(5,7)]壬烷 Cis,cis,trans-3,3,6,6,9,9- hexamethyl- tetracyclo[6.1.0.0(2,4).0(5 ,7)]nonane 51898-92-1 C15H24
(1alpha,2alpha,4alpha,5beta,7beta,8alpha)-3,3,6,6,9,9-六甲基-四环[6.1.0.0(2,4).0(5,7)]壬烷
(1alpha,2alpha,4alpha,5alpha)-8-亚甲基-三环(3.2.1.0(2,4))辛烷 Tricyclo[3.2.1.02,4]octane, 8-methylene-, (1alpha,2alpha,4alpha,5alpha)- 38310-48-4 C9H12
(1alpha,2alpha,4alpha,5alpha)-8-亚甲基-三环(3.2.1.0(2,4))辛烷
(1alpha,14alpha,16beta)-20-乙基-1,16-二甲氧基乌头碱-8,13,14-三醇14-(4-甲氧基苯甲酸酯) Contortumine 131653-96-8 C30H41NO6
(1alpha,14alpha,16beta)-20-乙基-1,16-二甲氧基乌头碱-8,13,14-三醇14-(4-甲氧基苯甲酸酯)
(1aS-(1aalpha,3beta,3abeta,3aalpha,6aalpha,7beta,7aS*))-四氢-7-羟基-3a,5,5-三甲基-螺(环戊并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-3(3ah),2'-环氧乙烷)-2,4(1ah,3bH)-二酮 1-Deoxy-1-ketocoriolin 74399-38-5 C15H18O5
(1aS-(1aalpha,3beta,3abeta,3aalpha,6aalpha,7beta,7aS*))-四氢-7-羟基-3a,5,5-三甲基-螺(环戊并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-3(3ah),2'-环氧乙烷)-2,4(1ah,3bH)-二酮
(1aS-(1aalpha,3abeta,3balpha,4alpha,5beta,6aalpha,7aR*))-十氢-3a,5-二甲基-3-亚甲基-2-氧代-4-((1-氧代辛基)氧基)-环戊二烯并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-5-羧酸 Phellodonic acid 152613-17-7 C23H32O6
(1aS-(1aalpha,3abeta,3balpha,4alpha,5beta,6aalpha,7aR*))-十氢-3a,5-二甲基-3-亚甲基-2-氧代-4-((1-氧代辛基)氧基)-环戊二烯并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-5-羧酸
(1aS,7aR)-1a-[(2E)-3,7-二甲基辛-2,6-二烯基]-4,6-二羟基-5-甲基-7a-(3-甲基丁-2-烯基)萘并[2,3-b]环氧乙烯-2,7-醌 Antibiotic SF2415B2 110200-30-1 C26H32O5
(1aS,7aR)-1a-[(2E)-3,7-二甲基辛-2,6-二烯基]-4,6-二羟基-5-甲基-7a-(3-甲基丁-2-烯基)萘并[2,3-b]环氧乙烯-2,7-醌
(1aS,6R,7R,7aR,7bR)-6-羟基-7,7a-二甲基-1a-[(2R)-2-甲基噁丙环-2-基]-4,5,6,7,7a,7b-六氢萘并[1,2-b]噁丙烯-2(1aH)-酮 (+)-gigantenone 125140-03-6 C15H20O4
(1aS,6R,7R,7aR,7bR)-6-羟基-7,7a-二甲基-1a-[(2R)-2-甲基噁丙环-2-基]-4,5,6,7,7a,7b-六氢萘并[1,2-b]噁丙烯-2(1aH)-酮
(1aS,4R,5Z,10S,10aS)-4-乙酰氧基-3,4,10,10alpha-四氢-5,9-二甲基-2H-10,1alpha-(环氧甲桥)环氧乙烷并[4,5]环癸并[1,2-b]呋喃-12-酮 Zeylanan 20149-41-1 C17H18O6
(1aS,4R,5Z,10S,10aS)-4-乙酰氧基-3,4,10,10alpha-四氢-5,9-二甲基-2H-10,1alpha-(环氧甲桥)环氧乙烷并[4,5]环癸并[1,2-b]呋喃-12-酮
(1aS,1bS,2S,5aR,6S,6aS)-1a,1b,2,5a,6,6a-六氢-6-羟基-1a-((((2Z)-1-氧代-3-苯基-2-丙烯基)氧基)甲基)环氧乙烷并(4,5)环戊并(1,2-c)吡喃-2-基beta-D-吡喃葡萄糖苷 [(1S,2S,4S,5S,6R)-5-hydroxy-10-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,9-dioxatricyclo[4.4.0.02,4]dec-7-en-2-yl]methyl (Z)-3-phenylprop-2-enoate 76248-14-1 C24H28O11
(1aS,1bS,2S,5aR,6S,6aS)-1a,1b,2,5a,6,6a-六氢-6-羟基-1a-((((2Z)-1-氧代-3-苯基-2-丙烯基)氧基)甲基)环氧乙烷并(4,5)环戊并(1,2-c)吡喃-2-基beta-D-吡喃葡萄糖苷
(1aR-(1aalpha,6beta,7alpha,7aalpha,7balpha))-4,5,6,7,7a,7b-六氢-6-羟基-1a-(1-(羟基甲基)乙烯基)-7,7a-二甲基-萘并(1,2-b)环氧乙烯-2(1aH)-酮 (3R,4R,5R,6R,7R)-phomenone 55785-58-5 C15H20O4
(1aR-(1aalpha,6beta,7alpha,7aalpha,7balpha))-4,5,6,7,7a,7b-六氢-6-羟基-1a-(1-(羟基甲基)乙烯基)-7,7a-二甲基-萘并(1,2-b)环氧乙烯-2(1aH)-酮
(1aR-(1aalpha,2beta,5beta,5abeta,6beta,8aalpha,9alpha,10aalpha))-十四烷酸1a,2,5,5a,6,9,10,10a-八氢-5,5a-二羟基-4-(羟基甲基)-1,1,7,9-四甲基-11-氧代-1H-2,8a-甲桥环戊并(a)环丙烯并(e)环癸烯-6-基酯 Tetradecanoic acid, 1a,2,5,5a,6,9,10,10a-octahydro-5,5a-dihydroxy-4-(hydroxymethyl)-1,1,7,9-tetramethyl-11-oxo-1H-2,8a-methanocyclopenta(a)cyclopropa(e)cyclodecen-6-yl ester, (1aR-(1aalpha,2beta,5beta,5abeta,6beta,8aalpha,9alpha,10aalpha))- 83036-62-8 C34H56O6
(1aR-(1aalpha,2beta,5beta,5abeta,6beta,8aalpha,9alpha,10aalpha))-十四烷酸1a,2,5,5a,6,9,10,10a-八氢-5,5a-二羟基-4-(羟基甲基)-1,1,7,9-四甲基-11-氧代-1H-2,8a-甲桥环戊并(a)环丙烯并(e)环癸烯-6-基酯
(1aR-(1aalpha,2beta,3Abeta,3balpha,5alpha,6aalpha,7As*))-十氢-2-羟基-3a,5-二甲基-3-亚甲基-环戊二烯并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-5-羧酸 (+)-hirsutic acid 3650-17-7 C15H20O4
(1aR-(1aalpha,2beta,3Abeta,3balpha,5alpha,6aalpha,7As*))-十氢-2-羟基-3a,5-二甲基-3-亚甲基-环戊二烯并(4,5)二并环戊烯并(1,6a-b)环氧乙烯-5-羧酸
(1aR-(1aR*,6aR*,7aR*,9aR*))-1a,2,6,6a,7a,8,9,9a-八氢-1a,5,7a-三甲基-二环氧乙烷并(4,5:8,9)环癸(1,2-b)呋喃 Glechomafuran 38146-67-7 C15H20O3
(1aR-(1aR*,6aR*,7aR*,9aR*))-1a,2,6,6a,7a,8,9,9a-八氢-1a,5,7a-三甲基-二环氧乙烷并(4,5:8,9)环癸(1,2-b)呋喃
(1aR-(1aR*,3S*,4Z,5aR*,8aR*,9R*(Z),10aR*))-1a,2,3,5a,7,8,8a,9,10,10a-十氢-3-羟基-4,10a-二甲基-8-亚甲基-7-氧代环氧乙烷并(5,6)环癸(1,2-b)呋喃-9-基2-甲基-2-丁酸酯 (1aR,3S,4E,5aR,8aR,9R,10aR)-3-hydroxy-4,10a-dimethyl-8-methylidene-7-oxo-1a,2,3,5a,7,8,8a,9,10,10a-decahydrooxireno[5,6]cyclodeca[1,2-b]furan-9-yl (2E)-2-methylbut-2-enoate 13323-48-3 C20H26O6
(1aR-(1aR*,3S*,4Z,5aR*,8aR*,9R*(Z),10aR*))-1a,2,3,5a,7,8,8a,9,10,10a-十氢-3-羟基-4,10a-二甲基-8-亚甲基-7-氧代环氧乙烷并(5,6)环癸(1,2-b)呋喃-9-基2-甲基-2-丁酸酯
(1aR-(1aR*,35*,4Z,5aR*,8aR*,9R*,10aR*))-2-甲基-丙酸1a,2,3,5a,7,8,8a,9,10,10alpha-十氢-3-羟基-4,10alpha-二甲基-8-亚甲基-7-氧代环氧乙烷并(5,6)环癸(1,2-b)呋喃-9-基酯 Tagitinins 59979-58-7 C19H26O6
(1aR-(1aR*,35*,4Z,5aR*,8aR*,9R*,10aR*))-2-甲基-丙酸1a,2,3,5a,7,8,8a,9,10,10alpha-十氢-3-羟基-4,10alpha-二甲基-8-亚甲基-7-氧代环氧乙烷并(5,6)环癸(1,2-b)呋喃-9-基酯
(1aR,7aR)-八氢-alpha,alpha,3abeta,7beta-四甲基-1H-环丙并[c]茚-1abeta-甲醇 cycloeudesmol 53823-06-6 C15H26O
(1aR,7aR)-八氢-alpha,alpha,3abeta,7beta-四甲基-1H-环丙并[c]茚-1abeta-甲醇
(1aR,6R,7R,7aR,7bR)-6-羟基-1a-异丙烯基-7,7a-二甲基-4,5,6,7,7a,7b-六氢萘并[1,2-b]环氧乙烯-2(1aH)-酮 (3S,4R,4aR,5R,6R)-sporogen-AO 1 88418-12-6 C15H20O3
(1aR,6R,7R,7aR,7bR)-6-羟基-1a-异丙烯基-7,7a-二甲基-4,5,6,7,7a,7b-六氢萘并[1,2-b]环氧乙烯-2(1aH)-酮
(1aR,4aS,7S,7aS,7bS)-1,1,4,7-四甲基-1a,2,4a,5,6,7,7a,7b-八氢-1H-环丙并[e]薁 (1aalpha,4aalpha,7alpha,7abeta,7balpha)-(-)-1a,2,4a,5,6,7,7a,7b-octahydro-1,1,4,7-tetramethyl-1H-cycloprop[e]azulene 85048-01-7 C15H24
(1aR,4aS,7S,7aS,7bS)-1,1,4,7-四甲基-1a,2,4a,5,6,7,7a,7b-八氢-1H-环丙并[e]薁
(1aR,4S,4aS,7R,7aS,7bR)-1,1,4,7-四甲基十氢-1H-环丙烯并[e]薁-4,7-二醇 (+/-)-Alloaromadendrane-4β,10α-diol 136458-41-8 C15H26O2
(1aR,4S,4aS,7R,7aS,7bR)-1,1,4,7-四甲基十氢-1H-环丙烯并[e]薁-4,7-二醇