公开(公告)号：US4199481A

公开(公告)日：1980-04-22

申请号：US46551

申请日：1979-06-07

申请人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

发明人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

IPC分类号： C07C45/46 ,  C07C49/792 ,  C11B9/00 ,  A61K7/46

CPC分类号： C11B9/0061 ,  C07C45/46 ,  C07C49/792 ,  C11B9/0034 ,  C11B9/0049

摘要： A process is described for providing clear extended compositions of essential oils which comprises a composition of an essential oil and an extender material miscible with said essential oil which does not appreciably alter the aroma of the essential oil insofar as its quality or strength is concerned, the proportion of essential oil in extender material being from about 70% up to about 99%, said extender material being an acylated dimerization product of an alpha methyl styrene or a methyl or other C.sub.2 -C.sub.4 lower alkyl homologue thereof or hydrogenated derivative thereof or mixture of same.

摘要翻译： 描述了一种用于提供精油的清晰延长组合物的方法，其包含精油和与所述精油混溶的增量剂材料的组合物，其不会明显地改变其质量或强度方面的精油的香味， 增量材料中精油的比例为约70％至约99％，所述增量材料是α-甲基苯乙烯或其甲基或其它C 2 -C 4低级烷基同系物的酰化二聚产物或其氢化衍生物或 相同。

公开(公告)号：US4165301A

公开(公告)日：1979-08-21

申请号：US902436

申请日：1978-05-03

申请人： Wilhelmus J. Wiegers ,  John B. Hall ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt ,  Braja D. Mookherjee ,  Chi-Kuen Shu ,  William L. Schreiber

发明人： Wilhelmus J. Wiegers ,  John B. Hall ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt ,  Braja D. Mookherjee ,  Chi-Kuen Shu ,  William L. Schreiber

IPC分类号： C11B9/00

CPC分类号： C11B9/00

摘要： A process is described for providing clear extended compositions of synthetic and/or natural essential oils and/or perfumery chemicals which comprises admixing a composition of a synthetic and/or natural essential oil and/or perfumery chemical and an extender material miscible with said synthetic and/or natural essential oil and/or perfumery chemical which does not appreciably alter the aroma of the synthetic and/or natural essential oil and/or perfumery chemical insofar as its quality or strength is concerned, the proportion of synthetic and/or natural essential oil and/or perfumery chemical in extender material being from about 70% up to about 99%, said extender material being one or more "dimerization" (or "coupling") products of one or more terpenes which are monocyclic and have two carbon-carbon double bonds or which are bicyclic and have one carbon-carbon double bond or one or more hydrogenated derivatives thereof or mixtures of same.

摘要翻译： 描述了一种用于提供合成和/或天然精油和/或香料化学品的清晰延长组合物的方法，其包括混合合成和/或天然精油和/或香料化学品的组合物和与所述合成和/或香料化学品可混溶的增量剂材料 /或天然精油和/或香料化学品，其质量或强度在合理和/或天然精油和/或香料化学品的芳香度方面不会明显改变，合成和/或天然精油的比例 和/或增量材料中的香料化学品为约70％至约99％，所述增量材料是一种或多种单环的一种或多种萜烯的“二聚”（或“偶联”）产物，并具有两个碳 - 碳 双键或双环并具有一个碳 - 碳双键或其一种或多种氢化衍生物或其混合物。

公开(公告)号：US4142998A

公开(公告)日：1979-03-06

申请号：US902565

申请日：1978-05-03

申请人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

发明人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

IPC分类号： A23L27/00 ,  C11B9/02 ,  C11B9/00

CPC分类号： C11B9/02 ,  A23L27/70

摘要： A process is described for providing clear extended compositions of essential oils which comprises a composition of an essential oil and an extender material miscible with said essential oil which does not appreciably alter the aroma of the essential oil insofar as its quality or strength is concerned, the proportion of essential oil in extender material being from about 70% up to about 99%, said extender material being a dimerization product of an alpha methyl styrene or a methyl or other C.sub.2 -C.sub.4 lower alkyl homologue thereof or hydrogenated derivative thereof or mixture of same, having one of the generic structures: ##STR1## wherein R.sub.3 and R.sub.4 are the same or different and each represents hydrogen or methyl or other C.sub.2 -C.sub.4 lower alkyl and wherein the dashed lines and wavy lines represent carbon-carbon single bonds or carbon-carbon double bonds with the proviso that when there is one double bond present only the wavy line is a double bond and when there is more than one double bond present, the ring containing the dashed lines and the wavy line is a benzene ring and wherein the line represents either a carbon-carbon single bond or no bond.

公开(公告)号：US4170576A

公开(公告)日：1979-10-09

申请号：US923183

申请日：1978-07-10

申请人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

发明人： John B. Hall ,  Wilhelmus J. Wiegers ,  Ira D. Hill ,  Robert M. Novak ,  Frederick L. Schmitt

IPC分类号： A23L27/00 ,  C07C2/04 ,  C07C2/42 ,  C07C13/465 ,  C11B9/02 ,  C11B9/00

CPC分类号： C11B9/02 ,  A23L27/70 ,  C07C13/465 ,  C07C2/04 ,  C07C2/42 ,  C07C2102/08 ,  C07C2521/16

摘要： A process is described for providing clear extended compositions of essential oils which comprises a composition of an essential oil and an extender material miscible with said essential oil which does not appreciably alter the aroma of the essential oil insofar as its quality or strength is concerned, the proportion of essential oil in extender material being from about 70% up to about 99%, said extender material being a mixture of (A) a dimerization product of an alpha methyl styrene or a methyl or other C.sub.2 -C.sub.4 lower alkyl homologue thereof or mixture of same, and (B) one or more "dimerization" (or "coupling") products of one or more terpenes which are monocyclic and have two carbon-carbon double bonds or which are bicyclic and have one carbon-carbon double bond or one or more hydrogenated derivatives thereof or mixtures of same.

摘要翻译： 描述了一种用于提供精油的清晰延长组合物的方法，其包含精油和与所述精油混溶的增量剂材料的组合物，其不会明显地改变其质量或强度的香精的香味， 增量材料中精油的比例为约70％至约99％，所述增量材料是（A）α-甲基苯乙烯或其甲基或其它C 2 -C 4低级烷基同系物的二聚产物或混合物的混合物 和（B）一种或多种单环单体并具有两个碳 - 碳双键或双环并具有一个碳 - 碳双键的一个或多个萜烯的“二聚”（或“偶联”）产物或一种 或更多的氢化衍生物或其混合物。

公开(公告)号：US4315951A

公开(公告)日：1982-02-16

申请号：US212886

申请日：1980-12-04

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： C07C2/42 ,  C07C29/36 ,  C07C33/34 ,  C07D311/94 ,  C11B9/00 ,  A23L1/226

CPC分类号： C11B9/008 ,  C07C2/42 ,  C07C29/36 ,  C07C33/34 ,  C07D311/94 ,  C07C2102/08 ,  C07C2521/16 ,  C07C2531/08

摘要： Processes and compositions are described for the use in foodstuff flavor and aroma and perfume and perfumed article aroma augmenting, modifying, altering and enhancing compositions and as foodstuff, chewing gum, toothpaste, medicinal product, perfume and perfumed article aroma imparting materials of certain indane alkanols and tricyclic isochromans defined according to the generic structure: ##STR1## wherein one of R.sub.1, R.sub.2, R.sub.3 or R.sub.4 is C.sub.2 H.sub.5 and the remaining R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents methyl; wherein X is --CH.sub.2 -- or hydrogen and wherein the dashed line represents a carbon-carbon single bond or no bond with the proviso that when X is --CH.sub.2 --, then the dashed line is a carbon-carbon single bond and when X is hydrogen, the dashed line represents no bond.Addition of said indane alkanols or said tricyclic isochromans or mixtures thereof is indicated to produce:A. In food flavorings, a sweet, musky, patchouli-like, and ionone-like aroma and flavor characteristic; (useful for flavor augmentation or enhancement in pear, apricot and peach flavors);B. In perfumes and perfumed articles, a sweet, musky aroma with earthy, minty and sweet nuances.

摘要翻译： 描述了用于食品香料和香料和香料和香料制品香气增强，改性，改变和增强组合物以及作为食品，口香糖，牙膏，药用产品，香料和香料制品中某些二烷基链烷醇的赋香材料的方法和组合物 和根据通用结构定义的三环异染料：其中R 1，R 2，R 3或R 4中的一个为C 2 H 5，剩余的R 1，R 2，R 3和R 4表示甲基; 其中X是-CH 2 - 或氢，并且其中虚线表示碳 - 碳单键或没有键，条件是当X是-CH 2 - 时，虚线是碳 - 碳单键，当X是氢时 ，虚线表示没有键。 表示添加所述二氢化茚烷醇或所述三环异色素或其混合物以产生：A.在食品调味品中，甜味，麝香，广藿香样和紫罗兰酮样芳香和风味特征; （用于梨，杏和桃味的增味或增强）; B.在香水和香水制品中，甜美，麝香的香气与土质，微小和甜美的细微差别。

公开(公告)号：US4308412A

公开(公告)日：1981-12-29

申请号：US212992

申请日：1980-12-04

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： C07C2/42 ,  C07C29/36 ,  C07C33/34 ,  C07D311/94 ,  C11B9/00 ,  C07C3/00

CPC分类号： C11B9/008 ,  C07C2/42 ,  C07C29/36 ,  C07C33/34 ,  C07D311/94 ,  C07C2102/08 ,  C07C2521/16 ,  C07C2531/08

摘要： Processes and compositions are described for the use in foodstuff flavor and aroma and perfume and perfumed article aroma augmenting, modifying, altering and enhancing compositions and as foodstuff, chewing gum, toothpaste, medicinal product, perfume and perfumed article aroma imparting materials of certain indane alkanols and tricyclic isochromans defined according to the generic structure: ##STR1## wherein one of R.sub.1, R.sub.2, R.sub.3 or R.sub.4 is C.sub.2 H.sub.5 and the remaining R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents methyl; wherein X is --CH.sub.2 -- or hydrogen and wherein the dashed line represents a carbon-carbon single bond or no bond with the proviso that when X is --CH.sub.2 --, then the dashed line is a carbon-carbon single bond and when X is hydrogen, the dashed line represents no bond.Addition of said indane alkanols or said tricyclic isochromans or mixtures thereof is indicated to produce:A. In food flavorings, a sweet, musky, patchouli-like, and ionone-like aroma and flavor characteristic; (useful for flavor augmentation or enhancement in pear, apricot and peach flavors);B. In perfumes and perfumed articles, a sweet, musky aroma with earthy, minty and sweet nuances.

摘要翻译： 描述了用于食品香料和香料和香料和香料制品香气增强，改性，改变和增强组合物以及作为食品，口香糖，牙膏，药用产品，香料和香料制品中某些二烷基链烷醇的赋香材料的方法和组合物 和根据通用结构定义的三环异染料：其中R 1，R 2，R 3或R 4中的一个为C 2 H 5，剩余的R 1，R 2，R 3和R 4表示甲基; 其中X是-CH 2 - 或氢，并且其中虚线表示碳 - 碳单键或没有键，条件是当X是-CH 2 - 时，虚线是碳 - 碳单键，当X是氢时 ，虚线表示没有键。 表示添加所述二氢化茚烷醇或所述三环异色素或其混合物以产生：A.在食品调味品中，甜味，麝香，广藿香样和紫罗兰酮样芳香和风味特征; （用于梨，杏和桃味的增味或增强）; B.在香水和香水制品中，甜美，麝香的香气与土质，微小和甜美的细微差别。

公开(公告)号：US4250200A

公开(公告)日：1981-02-10

申请号：US63374

申请日：1979-08-03

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： A23G4/00 ,  A23G4/06 ,  A23L27/20 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/00 ,  A23L1/226 ,  A23L1/235

CPC分类号： A23G4/06 ,  A23L27/2052 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/008 ,  C07C2102/08

摘要： Processes and compositions are described for the use in foodstuff flavor and aroma and perfume and perfumed article aroma augmenting, modifying, altering, and enhancing compositions and as foodstuff, chewing gum, toothpaste, medicinal product, perfume and perfumed article aroma imparting materials of indane alkanols and tricyclic isochromans defined according to the generic structure: ##STR1## wherein R.sub.1 is hydrogen or methyl; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent hydrogen, methyl or isopropyl; the dashed line represents a carbon-carbon single bond or no bond; X represents --CH.sub.2 --, CH.sub.3 or hydrogen; with the proviso (i) that R.sub.2 and R.sub.3 represent methyl when R.sub.4 is hydrogen and R.sub.5 is isopropyl and R.sub.4 and R.sub.5 represent methyl when R.sub.2 is hydrogen and R.sub.3 is isopropyl; and the dashed line represents a carbon-carbon single bond when X is --CH.sub.2 -- and the dashed line represents no bond when X is hydrogen or CH.sub.3.Addition of said indane alkanols and tricyclic isochromans or mixtures thereof is indicated to produce:(a) In food flavorings, a sweet, musky aroma and taste; and(b) In perfumes and perfumed articles and colognes, a sweet, musk aroma.

摘要翻译： 描述了用于食品香料和香料和香料和香料制品香气的方法和组合物，其增强，改性，改变和增强组合物以及作为食品，口香糖，牙膏，药用产品，香料和香料制品中的茚满链烷醇的芳香赋予材料 和根据通用结构定义的三环异染料：其中R 1是氢或甲基; R2，R3，R4和R5代表氢，甲基或异丙基; 虚线表示碳 - 碳单键或无键; X表示-CH 2 - ，CH 3或氢; 条件是（ⅰ）当R 4为氢时，R 2和R 3为甲基，R 5为异丙基，R 4和R 5为甲基，R 2为氢，R 3为异丙基; 当X为-CH 2 - 时，虚线表示碳 - 碳单键，当X为氢或CH3时虚线表示无键。 指示所述二环烷醇和三环异色素或其混合物的添加产生：（a）在食品香料中，甜味，麝香的香气和味道; 和（b）在香水和香水制品和古龙水中，一种甜美的麝香香气。

公开(公告)号：US4314915A

公开(公告)日：1982-02-09

申请号：US206687

申请日：1980-11-13

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： A23G4/00 ,  A23G4/06 ,  A23L27/20 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/00 ,  A61K7/00

CPC分类号： A23G4/06 ,  A23L27/2052 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/008 ,  C07C2102/08

摘要： Processes and compositions are described for the use in foodstuff flavor and aroma and perfume and perfumed article aroma augmenting, modifying, altering, and enhancing compositions and as foodstuff, chewing gum, toothpaste, medicinal product, perfume and perfumed article aroma imparting materials of indane alkanols and tricyclic isochromans defined according to the generic structure: ##STR1## wherein R.sub.1 is hydrogen or methyl; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent hydrogen, methyl or isopropyl; the dashed line represents a carbon-carbon single bond or no bond; X represents --CH.sub.2 --, CH.sub.3 or hydrogen; with the proviso (i) that R.sub.2 and R.sub.3 represent methyl when R.sub.4 is hydrogen and R.sub.5 is isopropyl and R.sub.4 and R.sub.5 represent methyl when R.sub.2 is hydrogen and R.sub.3 is isopropyl; and the dashed line represents a carbon-carbon single bond when X is --CH.sub.2 -- and the dashed line represents no bond when X is hydrogen or CH.sub.3.Addition of said indane alkanols and tricyclic isochromans or mixtures thereof is indicated to produce:(a) In food flavorings, a sweet, musky aroma and taste; and(b) In perfumes and perfumed articles and colognes, a sweet, musk aroma.

摘要翻译： 描述了用于食品香料和香料和香料和香料制品香气的方法和组合物，其增强，改性，改变和增强组合物以及作为食品，口香糖，牙膏，药用产品，香料和香料制品中的茚满链烷醇的芳香赋予材料 和根据通用结构定义的三环异染料：其中R 1是氢或甲基; R2，R3，R4和R5代表氢，甲基或异丙基; 虚线表示碳 - 碳单键或无键; X表示-CH 2 - ，CH 3或氢; 条件是（ⅰ）当R 4为氢时，R 2和R 3为甲基，R 5为异丙基，R 4和R 5为甲基，R 2为氢，R 3为异丙基; 当X为-CH 2 - 时，虚线表示碳 - 碳单键，当X为氢或CH3时虚线表示无键。 指示所述二环烷醇和三环异色素或其混合物的添加产生：（a）在食品香料中，甜味，麝香的香气和味道; 和（b）在香水和香水制品和古龙水中，一种甜美的麝香香气。

公开(公告)号：US4295978A

公开(公告)日：1981-10-20

申请号：US206651

申请日：1980-11-13

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： A23G4/00 ,  A23G4/06 ,  A23L27/20 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/00 ,  D06M13/00 ,  D06M23/00 ,  D06M13/18 ,  D06M13/16 ,  D06M15/00

CPC分类号： A23G4/06 ,  A23L27/2052 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/008 ,  D06M13/005 ,  D06M23/00 ,  C07C2102/08

摘要： Described is a dryer-added fabric softener article comprising a substrate, a substrate coating and an outer coating, said outer coating coated on said substrate coating and said substrate coating coated on said substrate, said substrate comprising a water dissolvable paper and said outer coating comprising an aroma augmenting or enhancing quantity of at least one indane alkanol or tricyclic isochroman having the structure: ##STR1## wherein X is hydrogen, methyl or --CH.sub.2 --; the dashed line is either a carbon-carbon single bond or no bond; R.sub.1 is hydrogen or methyl; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent hydrogen, methyl or isopropyl; with the proviso that R.sub.2 and R.sub.3 are methyl when R.sub.4 is hydrogen and R.sub.5 is isopropyl or R.sub.4 and R.sub.5 represent methyl when R.sub.2 is hydrogen and R.sub.3 is isopropyl; and with the further proviso that the dashed line is a carbon-carbon single bond when X is --CH.sub.2 -- and the dashed line is no bond when X is hydrogen or CH.sub.3.

摘要翻译： 描述了一种干燥剂添加的织物柔软剂制品，其包括基底，基底涂层和外涂层，所述外涂层涂覆在所述基底涂层上，所述基底涂层涂覆在所述基底上，所述基底包含水溶性纸，所述外涂层包含 至少一种具有以下结构的茚满烷醇或三环异苯并二氢an酮的芳香增加或增加量：其中X为氢，甲基或-CH 2 - ; 虚线是碳 - 碳单键或无键; R1是氢或甲基; R2，R3，R4和R5代表氢，甲基或异丙基; 条件是当R 4为氢且R 5为异丙基时，R 2和R 3为甲基，R 2为氢时R 5为甲基，R 3为异丙基; 并且进一步的条件是当X是-CH 2 - 时，虚线是碳 - 碳单键，当X是氢或CH 3时，虚线不是键。

公开(公告)号：US4292193A

公开(公告)日：1981-09-29

申请号：US206650

申请日：1980-11-13

申请人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

发明人： Wilhelmus J. Wiegers ,  Mark A. Sprecker ,  Hugh Watkins ,  Manfred H. Vock ,  Frederick L. Schmitt

IPC分类号： A23G4/00 ,  A23G4/06 ,  A23L27/20 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/00 ,  C11D3/50 ,  C11D9/44

CPC分类号： A23G4/06 ,  A23L27/2052 ,  A23L27/29 ,  C07C29/36 ,  C07C33/34 ,  C07C43/168 ,  C07D311/94 ,  C11B9/008 ,  C11D3/50 ,  C07C2102/08

摘要： Described is a process for augmenting or enhancing the aroma of a solid or liquid anionic, cationic, or nonionic detergent comprising the step of intimately admixing with a solid or liquid anionic, cationic or nonionic detergent base an aroma augmenting or enhancing quantity of at least one indane alkanol or tricyclic isochroman having the structure ##STR1## wherein X is hydrogen, methyl or --CH.sub.2 --; the dashed line is either a carbon-carbon single bond or no bond; R.sub.1 is hydrogen or methyl; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent hydrogen, methyl or isopropyl; with the proviso that R.sub.2 and R.sub.3 are methyl when R.sub.4 is hydrogen and R.sub.5 is isopropyl or R.sub.4 and R.sub.5 represent methyl when R.sub.2 is hydrogen and R.sub.3 is isopropyl; and with the further proviso that the dashed line is a carbon-carbon single bond when X is --CH.sub.2 -- and the dashed line is no bond when X is hydrogen or CH.sub.3.

摘要翻译： 描述了一种用于增强或增强固体或液体阴离子，阳离子或非离子洗涤剂的香味的方法，其包括与固体或液体阴离子，阳离子或非离子洗涤剂基质充分混合的步骤，其香气增强或增强量至少一种 具有结构的茚满烷醇或三环异苯并二氢吡喃，其中X是氢，甲基或-CH 2 - ; 虚线是碳 - 碳单键或无键; R1是氢或甲基; R2，R3，R4和R5代表氢，甲基或异丙基; 条件是当R 4为氢且R 5为异丙基时，R 2和R 3为甲基，R 2为氢时R 5为甲基，R 3为异丙基; 并且进一步的条件是当X是-CH 2 - 时，虚线是碳 - 碳单键，当X是氢或CH 3时，虚线不是键。