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bf99molei金虫 (正式写手)
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[求助]
求US 4950478 和 US 5000961专利的Chem. Abstr.号
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急求 US 4950478专利 Chem. Abstr.号 US 5000961专利 Chem. Abstr.号 |
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baiyuefei
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bf99molei: 金币+3, ★★★★★最佳答案 2013-01-11 12:17:55
bf99molei: 金币+3, ★★★★★最佳答案 2013-01-11 12:17:55
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US 5000961 Preparation of tert-butylbenzylidenecamphors as drugs and cosmetics By: Lang, Gerard; Forestier, Serge; Lagrange, Alain; Moire, Claudine; Deflandre, Andre Assignee: Oreal S. A., Fr. The title compds. (I; R = H, Me3C; R1 = C1-8 alkyl, alkoxy; R2, R3 = H, OH; ≥1 of R2, R3 = OH), useful as antioxidants, light absorbers, and for prevention of inflammation, allergy, and cancer (no data), were prepd. A mixt. of DL-camphor, NaH, and 1,2-dimethoxyethane was refluxed 1 h and 3-tert-butyl-2-hydroxy-5-methoxybenzaldehyde in 1,2-dimethoxyethane was added. The mixt. was refluxed 3 h to give 31% I (R = R2 = H, R1 = OMe, R3 = OH). Accession Number 1989:553349 CAN111:153349 CAPLUS |
3楼2013-01-11 08:35:30
baiyuefei
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gruyclewee: 金币+2, 感谢解答，奖励一下。 2013-01-11 09:12:02
bf99molei: 金币+4, ★★★★★最佳答案 2013-01-11 12:17:48
li273273: 金币+2, 检索EPI+1, 感谢风雪兄弟的应助！ 2013-01-11 19:35:01
gruyclewee: 金币+2, 感谢解答，奖励一下。 2013-01-11 09:12:02
bf99molei: 金币+4, ★★★★★最佳答案 2013-01-11 12:17:48
li273273: 金币+2, 检索EPI+1, 感谢风雪兄弟的应助！ 2013-01-11 19:35:01
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US 4950478 Cosmetics containing phototoxic natural essences and benzylidenecamphor derivatives By: Lang, Gerard; Deflandre, Andre; Beck, Irena Assignee: Oreal S. A., Fr. Cosmetics contg. a natural fragrance with a phototoxic level of furocoumarins also contains 0.01-2% by wt. of at least 1 benzylidenecamphor deriv. absorber of UVA radiation to decrease the phototoxicity. A benzylidenecamphor deriv. absorbing UVB radiation may be added also. A shaving cream contained: natural fragrance contg. 50% bergamot oil 1.5, triethanolamine terephthalylidene-3,3'-dicamphor-10-sulfonate (I) [90394-37-9] 0.4, p-methylbenzylidenecamphor (II) [36861-47-9] 0.2, stearic acid 25, coconut oil 8, olive oil 2, cetyl alc. 1, sorbitol 3.5, 7.3N KOH 18, 9.5N NaOH 2.5, and H2O to 100 g. The cream contained 26.25 ppm 5-methoxypsoralen [484-20-8]. Accession Number 1984:616224 CAN101:216224 CAPLUS |
2楼2013-01-11 08:34:45
wsq1179
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4楼2013-01-11 09:00:06
